Languages written with Code for undetermined script script
| Language | Writing System Code | Writing System Status | SLDR/CLDR locale | Regional variants |
|---|---|---|---|---|
| A-Pucikwar | apq-Zyyy | unwritten | apq-Zyyy-IN (India) | |
| Abenaki, Eastern | aaq-Zyyy | unwritten | aaq-Zyyy-US (United States) | |
| Ache | yif-Zyyy | unknown | yif-Zyyy-CN (China) | |
| Adai | xad-Zyyy | unknown | xad-Zyyy-XX | |
| Aequian | xae-Zyyy | unknown | xae-Zyyy-XX | |
| Afitti | aft-Zyyy | unwritten | aft-Zyyy-SD (Sudan) | |
| Agariya | agi-Zyyy | unknown | agi-Zyyy-IN (India) | |
| Aghwan | xag-Zyyy | unknown | xag-Zyyy-XX | |
| Aheu | thm-Zyyy | unwritten | thm-Zyyy-TH (Thailand) | |
| Ahirani | ahr-Zyyy | unwritten | ahr-Zyyy-IN (India) | |
| Ai-Cham | aih-Zyyy | unwritten | aih-Zyyy-CN (China) | |
| Ainu | aib-Zyyy | unknown | aib-Zyyy-CN (China) | |
| Aka | soh-Zyyy | unwritten | soh-Zyyy-SD (Sudan) | |
| Aka-Bea | abj-Zyyy | unknown | abj-Zyyy-IN (India) | |
| Aka-Bo | akm-Zyyy | unknown | akm-Zyyy-IN (India) | |
| Aka-Cari | aci-Zyyy | unknown | aci-Zyyy-IN (India) | |
| Aka-Jeru | akj-Zyyy | unknown | akj-Zyyy-IN (India) | |
| Aka-Kede | akx-Zyyy | unknown | akx-Zyyy-IN (India) | |
| Aka-Kol | aky-Zyyy | unknown | aky-Zyyy-IN (India) | |
| Aka-Kora | ack-Zyyy | unknown | ack-Zyyy-IN (India) | |
| Akar-Bale | acl-Zyyy | unknown | acl-Zyyy-IN (India) | |
| Alak | alk-Zyyy | unwritten | alk-Zyyy-LA (Laos) | |
| Alanic | xln-Zyyy | unknown | xln-Zyyy-XX | |
| Alugu | aub-Zyyy | unwritten | aub-Zyyy-CN (China) | |
| Alviri-Vidari | avd-Zyyy | unknown | avd-Zyyy-IR (Iran) | |
| Amami-Oshima, Northern | ryn-Zyyy | unknown | ryn-Zyyy-JP (Japan) | |
| Amami-Oshima, Southern | ams-Zyyy | unknown | ams-Zyyy-JP (Japan) | |
| Amis | ami-Zyyy | unknown | ami-Zyyy-TW (China–Taiwan) | |
| Ancient Macedonian | xmk-Zyyy | unknown | xmk-Zyyy-XX | |
| Andaman Hindi Creole | hca-Zyyy | unwritten | hca-Zyyy-IN (India) | |
| Anfillo | myo-Zyyy | unwritten | myo-Zyyy-ET (Ethiopia) | |
| Anglo-Norman | xno-Zyyy | unknown | xno-Zyyy-XX | |
| Apalachee | xap-Zyyy | unknown | xap-Zyyy-XX | |
| Aquitanian | xaq-Zyyy | unknown | xaq-Zyyy-XX | |
| Aranadan | aaf-Zyyy | unwritten | aaf-Zyyy-IN (India) | |
| Aranama-Tamique | xrt-Zyyy | unwritten | xrt-Zyyy-US (United States) | |
| Atakapa | aqp-Zyyy | unwritten | aqp-Zyyy-US (United States) | |
| Atong | aot-Zyyy | unwritten | aot-Zyyy-IN (India) | |
| Awa | vwa-Zyyy | unwritten | vwa-Zyyy-CN (China) | |
| Awjilah | auj-Zyyy | unwritten | auj-Zyyy-LY (Libya) | |
| Awu | yiu-Zyyy | unknown | yiu-Zyyy-CN (China) | |
| Axi | yix-Zyyy | unwritten | yix-Zyyy-CN (China) | |
| Ayizi | yyz-Zyyy | unknown | yyz-Zyyy-CN (China) | |
| Azha | aza-Zyyy | unknown | aza-Zyyy-CN (China) | |
| Azhe | yiz-Zyyy | unwritten | yiz-Zyyy-CN (China) | |
| A’ou | aou-Zyyy | unwritten | aou-Zyyy-CN (China) | |
| Babuza | bzg-Zyyy | unknown | bzg-Zyyy-TW (China–Taiwan) | |
| Bactrian | xbc-Zyyy | unknown | xbc-Zyyy-XX | |
| Bai, Lama | lay-Zyyy | unknown | lay-Zyyy-CN (China) | |
| Baima | bqh-Zyyy | unwritten | bqh-Zyyy-CN (China) | |
| Baiso | bsw-Zyyy | unwritten | bsw-Zyyy-ET (Ethiopia) | |
| Bajelani | bjm-Zyyy | unknown | bjm-Zyyy-IQ (Iraq) | |
| Balaibalan | zba-Zyyy | unknown | zba-Zyyy-001 | |
| Barbareño | boi-Zyyy | unwritten | boi-Zyyy-US (United States) | |
| Basay | byq-Zyyy | unknown | byq-Zyyy-TW (China–Taiwan) | |
| Bashkardi | bsg-Zyyy | unknown | bsg-Zyyy-IR (Iran) | |
| Bats | bbl-Zyyy | unwritten | bbl-Zyyy-GE (Georgia) | |
| Bauria | bge-Zyyy | unwritten | bge-Zyyy-IN (India) | |
| Bay Miwok | mkq-Zyyy | unwritten | mkq-Zyyy-US (United States) | |
| Baygo | byg-Zyyy | unwritten | byg-Zyyy-SD (Sudan) | |
| Bazigar | bfr-Zyyy | unwritten | bfr-Zyyy-IN (India) | |
| Belait | beg-Zyyy | unwritten | beg-Zyyy-BN (Brunei) | |
| Bellari | brw-Zyyy | unwritten | brw-Zyyy-IN (India) | |
| Berti | byt-Zyyy | unwritten | byt-Zyyy-SD (Sudan) | |
| Bhalay | bhx-Zyyy | unwritten | bhx-Zyyy-IN (India) | |
| Bhattiyali | bht-Zyyy | unwritten | bht-Zyyy-IN (India) | |
| Biao | byk-Zyyy | unwritten | byk-Zyyy-CN (China) | |
| Biao Mon | bmt-Zyyy | unwritten | bmt-Zyyy-CN (China) | |
| Biao-Jiao Mien | bje-Zyyy | unwritten | bje-Zyyy-CN (China) | |
| Biloxi | bll-Zyyy | unwritten | bll-Zyyy-US (United States) | |
| Bit | bgk-Zyyy | unwritten | bgk-Zyyy-LA (Laos) | |
| Biyo | byo-Zyyy | unknown | byo-Zyyy-CN (China) | |
| Bo | bgl-Zyyy | unknown | bgl-Zyyy-LA (Laos) | |
| Bokha | ybk-Zyyy | unknown | ybk-Zyyy-CN (China) | |
| Bolgarian | xbo-Zyyy | unknown | xbo-Zyyy-XX | |
| Bolyu | ply-Zyyy | unwritten | ply-Zyyy-CN (China) | |
| Bonan | peh-Zyyy | unwritten | peh-Zyyy-CN (China) | |
| Boon | bnl-Zyyy | unknown | bnl-Zyyy-SO (Somalia) | |
| Brithenig | bzt-Zyyy | unknown | bzt-Zyyy-001 | |
| Brokkat | bro-Zyyy | unwritten | bro-Zyyy-BT (Bhutan) | |
| Brokpake | sgt-Zyyy | unwritten | sgt-Zyyy-BT (Bhutan) | |
| Bugan | bbh-Zyyy | unwritten | bbh-Zyyy-CN (China) | |
| Bumang | bvp-Zyyy | unwritten | bvp-Zyyy-CN (China) | |
| Bunu, Jiongnai | pnu-Zyyy | unwritten | pnu-Zyyy-CN (China) | |
| Bunu, Wunai | bwn-Zyyy | unknown | bwn-Zyyy-CN (China) | |
| Buriat, China | bxu-Zyyy | unknown | bxu-Zyyy-CN (China) | |
| Buyang, Baha | yha-Zyyy | unwritten | yha-Zyyy-CN (China) | |
| Buyang, E’ma | yzg-Zyyy | unwritten | yzg-Zyyy-CN (China) | |
| Buyang, Langnian | yln-Zyyy | unwritten | yln-Zyyy-CN (China) | |
| Camunic | xcc-Zyyy | unknown | xcc-Zyyy-XX | |
| Cao Miao | cov-Zyyy | unknown | cov-Zyyy-CN (China) | |
| Carolina Algonquian | crr-Zyyy | unwritten | crr-Zyyy-US (United States) | |
| Catawba | chc-Zyyy | unwritten | chc-Zyyy-US (United States) | |
| Cayuse | xcy-Zyyy | unknown | xcy-Zyyy-XX | |
| Celtiberian | xce-Zyyy | unknown | xce-Zyyy-XX | |
| Chadong | cdy-Zyyy | unwritten | cdy-Zyyy-CN (China) | |
| Chagatai | chg-Zyyy | unknown | chg-Zyyy-TM (Turkmenistan) | |
| Chak | ckh-Zyyy | unknown | ckh-Zyyy-BD (Bangladesh) | |
| Chalikha | tgf-Zyyy | unwritten | tgf-Zyyy-BT (Bhutan) | |
| Chamari | cdg-Zyyy | unwritten | cdg-Zyyy-IN (India) | |
| Chaura | crv-Zyyy | unknown | crv-Zyyy-IN (India) | |
| Chehalis, Lower | cea-Zyyy | unwritten | cea-Zyyy-US (United States) | |
| Chehalis, Upper | cjh-Zyyy | unwritten | cjh-Zyyy-US (United States) | |
| Chemakum | xch-Zyyy | unknown | xch-Zyyy-XX | |
| Chenoua | cnu-Zyyy | unwritten | cnu-Zyyy-DZ (Algeria) | |
| Chepya | ycp-Zyyy | unknown | ycp-Zyyy-LA (Laos) | |
| Chesu | ych-Zyyy | unknown | ych-Zyyy-CN (China) | |
| Chetti, Moundadan | cty-Zyyy | unknown | cty-Zyyy-IN (India) | |
| Chhiling | cur-Zyyy | unwritten | cur-Zyyy-NP (Nepal) | |
| Chimariko | cid-Zyyy | unwritten | cid-Zyyy-US (United States) | |
| Chinese, Min Zhong | czo-Zyyy | unknown | czo-Zyyy-CN (China) | |
| Chitimacha | ctm-Zyyy | unwritten | ctm-Zyyy-US (United States) | |
| Chocangacakha | cgk-Zyyy | unwritten | cgk-Zyyy-BT (Bhutan) | |
| Choni | cda-Zyyy | unknown | cda-Zyyy-CN (China) | |
| Chukwa | cuw-Zyyy | unwritten | cuw-Zyyy-NP (Nepal) | |
| Chung | scq-Zyyy | unknown | scq-Zyyy-KH (Cambodia) | |
| Chuvantsy | xcv-Zyyy | unknown | xcv-Zyyy-XX | |
| Cisalpine Gaulish | xcg-Zyyy | unknown | xcg-Zyyy-XX | |
| Classical Armenian | xcl-Zyyy | unknown | xcl-Zyyy-XX | |
| Classical Newari | nwc-Zyyy | unknown | nwc-Zyyy-NP (Nepal) | |
| Coahuilteco | xcw-Zyyy | unknown | xcw-Zyyy-XX | |
| Comecrudo | xcm-Zyyy | unknown | xcm-Zyyy-XX | |
| Comorian, Mwali | wlc-Zyyy | unwritten | wlc-Zyyy-KM (Comoros) | |
| Con | cno-Zyyy | unwritten | cno-Zyyy-LA (Laos) | |
| Coquille | coq-Zyyy | unwritten | coq-Zyyy-US (United States) | |
| Cotoname | xcn-Zyyy | unknown | xcn-Zyyy-XX | |
| Cowlitz | cow-Zyyy | unwritten | cow-Zyyy-US (United States) | |
| Cruzeño | crz-Zyyy | unwritten | crz-Zyyy-US (United States) | |
| Cumbric | xcb-Zyyy | unknown | xcb-Zyyy-XX | |
| Cun | cuq-Zyyy | unwritten | cuq-Zyyy-CN (China) | |
| Cuneiform Luwian | xlu-Zyyy | unknown | xlu-Zyyy-XX | |
| Cupeño | cup-Zyyy | unwritten | cup-Zyyy-US (United States) | |
| Curonian | xcu-Zyyy | unknown | xcu-Zyyy-XX | |
| Daatsʼíin | dtn-Zyyy | unwritten | dtn-Zyyy-ET (Ethiopia) | |
| Dabarre | dbr-Zyyy | unknown | dbr-Zyyy-SO (Somalia) | |
| Dacian | xdc-Zyyy | unknown | xdc-Zyyy-XX | |
| Dahalik | dlk-Zyyy | unwritten | dlk-Zyyy-ER (Eritrea) | |
| Dair | drb-Zyyy | unwritten | drb-Zyyy-SD (Sudan) | |
| Dakpakha | dka-Zyyy | unwritten | dka-Zyyy-BT (Bhutan) | |
| Danau | dnu-Zyyy | unwritten | dnu-Zyyy-MM (Myanmar) | |
| Danu | dnv-Zyyy | unwritten | dnv-Zyyy-MM (Myanmar) | |
| Darmiya | drd-Zyyy | unwritten | drd-Zyyy-IN (India) | |
| Degaru | dgu-Zyyy | unknown | dgu-Zyyy-IN (India) | |
| Delaware, Pidgin | dep-Zyyy | unwritten | dep-Zyyy-US (United States) | |
| Dime | dim-Zyyy | unwritten | dim-Zyyy-ET (Ethiopia) | |
| Dorze | doz-Zyyy | unwritten | doz-Zyyy-ET (Ethiopia) | |
| Duoluo | giw-Zyyy | unwritten | giw-Zyyy-CN (China) | |
| Dura | drq-Zyyy | unwritten | drq-Zyyy-NP (Nepal) | |
| Dutton World Speedwords | dws-Zyyy | unknown | dws-Zyyy-001 | |
| Dzalakha | dzl-Zyyy | unwritten | dzl-Zyyy-BT (Bhutan) | |
| Dzao Min | bpn-Zyyy | unwritten | bpn-Zyyy-CN (China) | |
| E | eee-Zyyy | unwritten | eee-Zyyy-CN (China) | |
| Early Tripuri | xtr-Zyyy | unknown | xtr-Zyyy-IN (India) | |
| Eblan | xeb-Zyyy | unknown | xeb-Zyyy-XX | |
| Edomite | xdm-Zyyy | unknown | xdm-Zyyy-XX | |
| El Hugeirat | elh-Zyyy | unwritten | elh-Zyyy-SD (Sudan) | |
| Elamite | elx-Zyyy | unknown | elx-Zyyy-IR (Iran) | |
| Enu | enu-Zyyy | unknown | enu-Zyyy-CN (China) | |
| Epi-Olmec | xep-Zyyy | unknown | xep-Zyyy-XX | |
| Epigraphic Mayan | emy-Zyyy | unwritten | emy-Zyyy-MX (Mexico) | |
| Eravallan | era-Zyyy | unwritten | era-Zyyy-IN (India) | |
| Eshtehardi | esh-Zyyy | unknown | esh-Zyyy-IR (Iran) | |
| Esselen | esq-Zyyy | unwritten | esq-Zyyy-US (United States) | |
| Etchemin | etc-Zyyy | unwritten | etc-Zyyy-US (United States) | |
| Eteocretan | ecr-Zyyy | unknown | ecr-Zyyy-GR (Greece) | |
| Eteocypriot | ecy-Zyyy | unknown | ecy-Zyyy-CY (Cyprus) | |
| Eyak | eya-Zyyy | unwritten | eya-Zyyy-US (United States) | |
| Faliscan | xfa-Zyyy | unknown | xfa-Zyyy-XX | |
| Gabrielino-Fernandeño | xgf-Zyyy | unknown | xgf-Zyyy-XX | |
| Gafat | gft-Zyyy | unknown | gft-Zyyy-ET (Ethiopia) | |
| Galatian | xga-Zyyy | unknown | xga-Zyyy-XX | |
| Galice | gce-Zyyy | unwritten | gce-Zyyy-US (United States) | |
| Galindan | xgl-Zyyy | unknown | xgl-Zyyy-XX | |
| Garre | gex-Zyyy | unknown | gex-Zyyy-SO (Somalia) | |
| Garza | xgr-Zyyy | unknown | xgr-Zyyy-XX | |
| Gayil | gyl-Zyyy | unwritten | gyl-Zyyy-ET (Ethiopia) | |
| Ghadamès | gha-Zyyy | unwritten | gha-Zyyy-LY (Libya) | |
| Ghale, Northern | ghh-Zyyy | unwritten | ghh-Zyyy-NP (Nepal) | |
| Ghulfan | ghl-Zyyy | unwritten | ghl-Zyyy-SD (Sudan) | |
| Girirra | gii-Zyyy | unwritten | gii-Zyyy-ET (Ethiopia) | |
| Godwari | gdx-Zyyy | unwritten | gdx-Zyyy-IN (India) | |
| Gongduk | goe-Zyyy | unwritten | goe-Zyyy-BT (Bhutan) | |
| Gozarkhani | goz-Zyyy | unwritten | goz-Zyyy-IR (Iran) | |
| Great Andamanese, Mixed | gac-Zyyy | unwritten | gac-Zyyy-IN (India) | |
| Groma | gro-Zyyy | unknown | gro-Zyyy-CN (China) | |
| Guiqiong | gqi-Zyyy | unwritten | gqi-Zyyy-CN (China) | |
| Gule | gly-Zyyy | unwritten | gly-Zyyy-SD (Sudan) | |
| Gyalsumdo | gyo-Zyyy | unwritten | gyo-Zyyy-NP (Nepal) | |
| Hadrami | xhd-Zyyy | unknown | xhd-Zyyy-XX | |
| Harami | xha-Zyyy | unknown | xha-Zyyy-XX | |
| Harsusi | hss-Zyyy | unknown | hss-Zyyy-OM (Oman) | |
| Hattic | xht-Zyyy | unknown | xht-Zyyy-TR (Turkey) | |
| Hernican | xhr-Zyyy | unknown | xhr-Zyyy-XX | |
| Hinduri | hii-Zyyy | unknown | hii-Zyyy-IN (India) | |
| Hlersu | hle-Zyyy | unwritten | hle-Zyyy-CN (China) | |
| Hobyót | hoh-Zyyy | unknown | hoh-Zyyy-OM (Oman) | |
| Horpa | ero-Zyyy | unwritten | ero-Zyyy-CN (China) | |
| Hozo | hoz-Zyyy | unwritten | hoz-Zyyy-ET (Ethiopia) | |
| Hpon | hpo-Zyyy | unwritten | hpo-Zyyy-MM (Myanmar) | |
| Hu | huo-Zyyy | unwritten | huo-Zyyy-CN (China) | |
| Humla | hut-Zyyy | unwritten | hut-Zyyy-NP (Nepal) | |
| Hung | hnu-Zyyy | unwritten | hnu-Zyyy-LA (Laos) | |
| Hunnic | xhc-Zyyy | unknown | xhc-Zyyy-XX | |
| Hurrian | xhu-Zyyy | unknown | xhu-Zyyy-XX | |
| Iberian | xib-Zyyy | unknown | xib-Zyyy-XX | |
| Ili Turki | ili-Zyyy | unknown | ili-Zyyy-CN (China) | |
| Illyrian | xil-Zyyy | unknown | xil-Zyyy-XX | |
| Indus Valley Language | xiv-Zyyy | unknown | xiv-Zyyy-XX | |
| Ineseño | inz-Zyyy | unwritten | inz-Zyyy-US (United States) | |
| Inor | ior-Zyyy | unwritten | ior-Zyyy-ET (Ethiopia) | |
| Interglossa | igs-Zyyy | unknown | igs-Zyyy-001 | |
| Iowa-Oto | iow-Zyyy | unwritten | iow-Zyyy-US (United States) | |
| Ir | irr-Zyyy | unknown | irr-Zyyy-LA (Laos) | |
| Jad | jda-Zyyy | unknown | jda-Zyyy-IN (India) | |
| Jangshung | jna-Zyyy | unwritten | jna-Zyyy-IN (India) | |
| Jarawa | anq-Zyyy | unwritten | anq-Zyyy-IN (India) | |
| Jewish Palestinian Aramaic | jpa-Zyyy | unknown | jpa-Zyyy-PS (Palestine) | |
| Jiamao | jio-Zyyy | unknown | jio-Zyyy-CN (China) | |
| Jiiddu | jii-Zyyy | unknown | jii-Zyyy-SO (Somalia) | |
| Judeo-Georgian | jge-Zyyy | unknown | jge-Zyyy-IL (Israel) | |
| Kabatei | xkp-Zyyy | unknown | xkp-Zyyy-IR (Iran) | |
| Kachama-Ganjule | kcx-Zyyy | unwritten | kcx-Zyyy-ET (Ethiopia) | |
| Kachari | xac-Zyyy | unknown | xac-Zyyy-IN (India) | |
| Kachok | xkk-Zyyy | unwritten | xkk-Zyyy-KH (Cambodia) | |
| Kadar | kej-Zyyy | unwritten | kej-Zyyy-IN (India) | |
| Kadaru | kdu-Zyyy | unwritten | kdu-Zyyy-SD (Sudan) | |
| Kaikadi | kep-Zyyy | unknown | kep-Zyyy-IN (India) | |
| Kaike | kzq-Zyyy | unwritten | kzq-Zyyy-NP (Nepal) | |
| Kakayi | sdf-Zyyy | unknown | sdf-Zyyy-IQ (Iraq) | |
| Kalanadi | wkl-Zyyy | unwritten | wkl-Zyyy-IN (India) | |
| Kamar | keq-Zyyy | unknown | keq-Zyyy-IN (India) | |
| Kanakanabu | xnb-Zyyy | unknown | xnb-Zyyy-TW (China–Taiwan) | |
| Kanan | zkn-Zyyy | unwritten | zkn-Zyyy-MM (Myanmar) | |
| Kanashi | xns-Zyyy | unwritten | xns-Zyyy-IN (India) | |
| Kang | kyp-Zyyy | unwritten | kyp-Zyyy-LA (Laos) | |
| Kangjia | kxs-Zyyy | unwritten | kxs-Zyyy-CN (China) | |
| Kanikkaran | kev-Zyyy | unknown | kev-Zyyy-IN (India) | |
| Kanjari | kft-Zyyy | unknown | kft-Zyyy-IN (India) | |
| Kara (Korea) | zra-Zyyy | unknown | zra-Zyyy-KR (South Korea) | |
| Karakhanid | xqa-Zyyy | unknown | xqa-Zyyy-TR (Turkey) | |
| Karankawa | zkk-Zyyy | unwritten | zkk-Zyyy-US (United States) | |
| Karen, Mobwa | jkm-Zyyy | unwritten | jkm-Zyyy-MM (Myanmar) | |
| Karen, Paku | jkp-Zyyy | unwritten | jkp-Zyyy-MM (Myanmar) | |
| Karingani | kgn-Zyyy | unknown | kgn-Zyyy-IR (Iran) | |
| Karkin | krb-Zyyy | unwritten | krb-Zyyy-US (United States) | |
| Karo | kxh-Zyyy | unwritten | kxh-Zyyy-ET (Ethiopia) | |
| Kaskean | zsk-Zyyy | unknown | zsk-Zyyy-TR (Turkey) | |
| Kathu | ykt-Zyyy | unknown | ykt-Zyyy-CN (China) | |
| Katkari | kfu-Zyyy | unknown | kfu-Zyyy-IN (India) | |
| Katla | kcr-Zyyy | unwritten | kcr-Zyyy-SD (Sudan) | |
| Kato | ktw-Zyyy | unwritten | ktw-Zyyy-US (United States) | |
| Katso | kaf-Zyyy | unwritten | kaf-Zyyy-CN (China) | |
| Kelo | xel-Zyyy | unwritten | xel-Zyyy-SD (Sudan) | |
| Kemiehua | kfj-Zyyy | unwritten | kfj-Zyyy-CN (China) | |
| Ketangalan | kae-Zyyy | unknown | kae-Zyyy-TW (China–Taiwan) | |
| Kewat | kyv-Zyyy | unwritten | kyv-Zyyy-NP (Nepal) | |
| Khalaj | klj-Zyyy | unknown | klj-Zyyy-IR (Iran) | |
| Khalaj [Indo-Iranian] | kjf-Zyyy | unknown | kjf-Zyyy-AZ (Azerbaijan) | |
| Kham, Eastern Parbate | kif-Zyyy | unwritten | kif-Zyyy-NP (Nepal) | |
| Khamyang | ksu-Zyyy | unknown | ksu-Zyyy-IN (India) | |
| Kharia Thar | ksy-Zyyy | unknown | ksy-Zyyy-IN (India) | |
| Khlula | ykl-Zyyy | unknown | ykl-Zyyy-CN (China) | |
| Khorezmian | zkh-Zyyy | unknown | zkh-Zyyy-TR (Turkey) | |
| Khotanese | kho-Zyyy | unknown | kho-Zyyy-IR (Iran) | |
| Kho’ini | xkc-Zyyy | unknown | xkc-Zyyy-IR (Iran) | |
| Kikai | kzg-Zyyy | unknown | kzg-Zyyy-JP (Japan) | |
| Kinnauri, Bhoti | nes-Zyyy | unwritten | nes-Zyyy-IN (India) | |
| Kinnauri, Chhoyul | tpq-Zyyy | unwritten | tpq-Zyyy-IN (India) | |
| Kinnauri, Chitkuli | cik-Zyyy | unwritten | cik-Zyyy-IN (India) | |
| Kiorr | xko-Zyyy | unwritten | xko-Zyyy-LA (Laos) | |
| Kitsai | kii-Zyyy | unwritten | kii-Zyyy-US (United States) | |
| Klamath-Modoc | kla-Zyyy | unwritten | kla-Zyyy-US (United States) | |
| Knaanic | czk-Zyyy | unknown | czk-Zyyy-CZ (Czechia) | |
| Ko | fuj-Zyyy | unwritten | fuj-Zyyy-SD (Sudan) | |
| Koguryo | zkg-Zyyy | unknown | zkg-Zyyy-CN (China) | |
| Kon Keu | kkn-Zyyy | unwritten | kkn-Zyyy-CN (China) | |
| Koraga, Korra | kfd-Zyyy | unknown | kfd-Zyyy-IN (India) | |
| Koraga, Mudu | vmd-Zyyy | unknown | vmd-Zyyy-IN (India) | |
| Korandje | kcy-Zyyy | unwritten | kcy-Zyyy-DZ (Algeria) | |
| Koresh-e Rostam | okh-Zyyy | unknown | okh-Zyyy-IR (Iran) | |
| Koro | jkr-Zyyy | unwritten | jkr-Zyyy-IN (India) | |
| Koroshi | ktl-Zyyy | unknown | ktl-Zyyy-IR (Iran) | |
| Kraol | rka-Zyyy | unwritten | rka-Zyyy-KH (Cambodia) | |
| Krevinian | zkv-Zyyy | unknown | zkv-Zyyy-LV (Latvia) | |
| Kua-nsi | ykn-Zyyy | unwritten | ykn-Zyyy-CN (China) | |
| Kuamasi | yku-Zyyy | unwritten | yku-Zyyy-CN (China) | |
| Kuan | uan-Zyyy | unknown | uan-Zyyy-LA (Laos) | |
| Kuanhua | xnh-Zyyy | unwritten | xnh-Zyyy-CN (China) | |
| Kumarbhag Paharia | kmj-Zyyy | unwritten | kmj-Zyyy-IN (India) | |
| Kumbaran | wkb-Zyyy | unwritten | wkb-Zyyy-IN (India) | |
| Kumzari | zum-Zyyy | unknown | zum-Zyyy-OM (Oman) | |
| Kunduvadi | wku-Zyyy | unwritten | wku-Zyyy-IN (India) | |
| Kunigami | xug-Zyyy | unknown | xug-Zyyy-JP (Japan) | |
| Kurumba, Alu | xua-Zyyy | unwritten | xua-Zyyy-IN (India) | |
| Kurumba, Jennu | xuj-Zyyy | unwritten | xuj-Zyyy-IN (India) | |
| Kurumba, Mullu | kpb-Zyyy | unwritten | kpb-Zyyy-IN (India) | |
| Kusunda | kgg-Zyyy | unwritten | kgg-Zyyy-NP (Nepal) | |
| Kwalhioqua-Tlatskanai | qwt-Zyyy | unwritten | qwt-Zyyy-US (United States) | |
| Kwegu | xwg-Zyyy | unwritten | xwg-Zyyy-ET (Ethiopia) | |
| Kyirong | kgy-Zyyy | unwritten | kgy-Zyyy-CN (China) | |
| Lafofa | laf-Zyyy | unwritten | laf-Zyyy-SD (Sudan) | |
| Lahta | kvt-Zyyy | unwritten | kvt-Zyyy-MM (Myanmar) | |
| Lakha | lkh-Zyyy | unwritten | lkh-Zyyy-BT (Bhutan) | |
| Lakkia | lbc-Zyyy | obsolete | lbc-Zyyy-CN | |
| Lalo, Central | ywt-Zyyy | unwritten | ywt-Zyyy-CN (China) | |
| Lalo, Dongshanba | yik-Zyyy | unwritten | yik-Zyyy-CN (China) | |
| Lalu, Eastern | yit-Zyyy | unknown | yit-Zyyy-CN (China) | |
| Lalu, Western | ywl-Zyyy | unwritten | ywl-Zyyy-CN (China) | |
| Lamu | llh-Zyyy | unwritten | llh-Zyyy-CN (China) | |
| Langobardic | lng-Zyyy | unknown | lng-Zyyy-HU (Hungary) | |
| Lang’e | yne-Zyyy | unknown | yne-Zyyy-CN (China) | |
| Laopang | lbg-Zyyy | unknown | lbg-Zyyy-LA (Laos) | |
| Late Middle Chinese | ltc-Zyyy | unknown | ltc-Zyyy-CN (China) | |
| Laurentian | lre-Zyyy | unwritten | lre-Zyyy-US (United States) | |
| Laven | lbo-Zyyy | unwritten | lbo-Zyyy-LA (Laos) | |
| Lavi | lvi-Zyyy | unknown | lvi-Zyyy-LA (Laos) | |
| Lavrung | jiq-Zyyy | unknown | jiq-Zyyy-CN (China) | |
| Lawu | lwu-Zyyy | unwritten | lwu-Zyyy-CN (China) | |
| Layakha | lya-Zyyy | unwritten | lya-Zyyy-BT (Bhutan) | |
| Lemnian | xle-Zyyy | unknown | xle-Zyyy-XX | |
| Lepontic | xlp-Zyyy | unknown | xlp-Zyyy-XX | |
| Lhokpu | lhp-Zyyy | unwritten | lhp-Zyyy-BT (Bhutan) | |
| Liburnian | xli-Zyyy | unwritten | xli-Zyyy-XX | |
| Ligurian (Ancient) | xlg-Zyyy | unknown | xlg-Zyyy-XX | |
| Limi | ylm-Zyyy | unwritten | ylm-Zyyy-CN (China) | |
| Lingao | onb-Zyyy | unknown | onb-Zyyy-CN (China) | |
| Lingua Franca | pml-Zyyy | unwritten | pml-Zyyy-TN (Tunisia) | |
| Lish | lsh-Zyyy | unwritten | lsh-Zyyy-IN (India) | |
| Logol | lof-Zyyy | unwritten | lof-Zyyy-SD (Sudan) | |
| Lohar, Gade | gda-Zyyy | unwritten | gda-Zyyy-IN (India) | |
| Lohar, Lahul | lhl-Zyyy | unknown | lhl-Zyyy-IN (India) | |
| Lolopo, Southern | ysp-Zyyy | unwritten | ysp-Zyyy-CN (China) | |
| Lomavren | rmi-Zyyy | unwritten | rmi-Zyyy-AM (Armenia) | |
| Lopi | lov-Zyyy | unknown | lov-Zyyy-CN (China) | |
| Loup A | xlo-Zyyy | unknown | xlo-Zyyy-XX | |
| Loup B | xlb-Zyyy | unknown | xlb-Zyyy-XX | |
| Lua' | prb-Zyyy | unknown | prb-Zyyy-TH (Thailand) | |
| Lui | lba-Zyyy | unknown | lba-Zyyy-IN (India) | |
| Lumbee | lmz-Zyyy | unwritten | lmz-Zyyy-US (United States) | |
| Lunanakha | luk-Zyyy | unwritten | luk-Zyyy-BT (Bhutan) | |
| Lusitanian | xls-Zyyy | unknown | xls-Zyyy-XX | |
| Luwati | luv-Zyyy | unknown | luv-Zyyy-OM (Oman) | |
| Lyngngam | lyg-Zyyy | unknown | lyg-Zyyy-IN (India) | |
| Láadan | ldn-Zyyy | unknown | ldn-Zyyy-001 | |
| Macanese | mzs-Zyyy | unknown | mzs-Zyyy-MO (China–Macao) | |
| Maek | hmk-Zyyy | unknown | hmk-Zyyy-KR (South Korea) | |
| Mahican | mjy-Zyyy | unwritten | mjy-Zyyy-US (United States) | |
| Maidu, Valley | vmv-Zyyy | unwritten | vmv-Zyyy-US (United States) | |
| Majhwar | mmj-Zyyy | unknown | mmj-Zyyy-IN (India) | |
| Mak | mkg-Zyyy | unwritten | mkg-Zyyy-CN (China) | |
| Mala Malasar | ima-Zyyy | unwritten | ima-Zyyy-IN (India) | |
| Malankuravan | mjo-Zyyy | unknown | mjo-Zyyy-IN (India) | |
| Malapandaram | mjp-Zyyy | unknown | mjp-Zyyy-IN (India) | |
| Malaryan | mjq-Zyyy | unwritten | mjq-Zyyy-IN (India) | |
| Malasar | ymr-Zyyy | unwritten | ymr-Zyyy-IN (India) | |
| Malavedan | mjr-Zyyy | unwritten | mjr-Zyyy-IN (India) | |
| Maleng | pkt-Zyyy | unwritten | pkt-Zyyy-LA (Laos) | |
| Man Met | mml-Zyyy | unwritten | mml-Zyyy-CN (China) | |
| Manda | mha-Zyyy | unknown | mha-Zyyy-IN (India) | |
| Maraghei | vmh-Zyyy | unknown | vmh-Zyyy-IR (Iran) | |
| Marrucinian | umc-Zyyy | unknown | umc-Zyyy-XX | |
| Mattole | mvb-Zyyy | unwritten | mvb-Zyyy-US (United States) | |
| Median | xme-Zyyy | unknown | xme-Zyyy-XX | |
| Megam | mef-Zyyy | unwritten | mef-Zyyy-BD (Bangladesh) | |
| Mel-Khaonh | hkn-Zyyy | unwritten | hkn-Zyyy-KH (Cambodia) | |
| Melo | mfx-Zyyy | unwritten | mfx-Zyyy-ET (Ethiopia) | |
| Merwari | wry-Zyyy | unwritten | wry-Zyyy-IN (India) | |
| Mesmes | mys-Zyyy | unwritten | mys-Zyyy-ET (Ethiopia) | |
| Miao, Central Huishui | hmc-Zyyy | unknown | hmc-Zyyy-CN (China) | |
| Miao, Central Mashan | hmm-Zyyy | unknown | hmm-Zyyy-CN (China) | |
| Miao, Eastern Huishui | hme-Zyyy | unknown | hme-Zyyy-CN (China) | |
| Miao, Eastern Xiangxi | muq-Zyyy | unknown | muq-Zyyy-CN (China) | |
| Miao, Horned | hrm-Zyyy | unwritten | hrm-Zyyy-CN (China) | |
| Miao, Luopohe | hml-Zyyy | unknown | hml-Zyyy-CN (China) | |
| Miao, Northern Guiyang | huj-Zyyy | unknown | huj-Zyyy-CN (China) | |
| Miao, Northern Huishui | hmi-Zyyy | unknown | hmi-Zyyy-CN (China) | |
| Miao, Northern Mashan | hmp-Zyyy | unknown | hmp-Zyyy-CN (China) | |
| Miao, Southern Guiyang | hmy-Zyyy | unknown | hmy-Zyyy-CN (China) | |
| Miao, Southern Mashan | hma-Zyyy | unknown | hma-Zyyy-CN (China) | |
| Miao, Southwestern Guiyang | hmg-Zyyy | unknown | hmg-Zyyy-CN (China) | |
| Miao, Southwestern Huishui | hmh-Zyyy | unknown | hmh-Zyyy-CN (China) | |
| Miao, Western Mashan | hmw-Zyyy | unwritten | hmw-Zyyy-CN (China) | |
| Michigamea | cmm-Zyyy | unwritten | cmm-Zyyy-US (United States) | |
| Middle Armenian | axm-Zyyy | unknown | axm-Zyyy-AM (Armenia) | |
| Middle Hittite | htx-Zyyy | unknown | htx-Zyyy-TR (Turkey) | |
| Middle Korean (10th-16th cent.) | okm-Zyyy | unknown | okm-Zyyy-KR (South Korea) | |
| Middle Mongolian | xng-Zyyy | unknown | xng-Zyyy-XX | |
| Midob | mei-Zyyy | unwritten | mei-Zyyy-SD (Sudan) | |
| Mili | ymh-Zyyy | unknown | ymh-Zyyy-CN (China) | |
| Miluk | iml-Zyyy | unwritten | iml-Zyyy-US (United States) | |
| Milyan | imy-Zyyy | unknown | imy-Zyyy-TR (Turkey) | |
| Mina (India) | myi-Zyyy | unknown | myi-Zyyy-IN (India) | |
| Minaean | inm-Zyyy | unknown | inm-Zyyy-YE (Yemen) | |
| Minyag, Eastern | emq-Zyyy | unwritten | emq-Zyyy-CN (China) | |
| Minyag, Western | wmg-Zyyy | unwritten | wmg-Zyyy-CN (China) | |
| Miqie | yiq-Zyyy | unknown | yiq-Zyyy-CN (China) | |
| Miwok, Coast | csi-Zyyy | unwritten | csi-Zyyy-US (United States) | |
| Miyako | mvi-Zyyy | unknown | mvi-Zyyy-JP (Japan) | |
| Mobilian | mod-Zyyy | unwritten | mod-Zyyy-US (United States) | |
| Mohegan-Pequot | xpq-Zyyy | unwritten | xpq-Zyyy-US (United States) | |
| Moji | ymi-Zyyy | unknown | ymi-Zyyy-CN (China) | |
| Mok | mqt-Zyyy | unwritten | mqt-Zyyy-TH (Thailand) | |
| Molale | mbe-Zyyy | unwritten | mbe-Zyyy-US (United States) | |
| Monpa, Kalaktang | kkf-Zyyy | unwritten | kkf-Zyyy-IN (India) | |
| Mositacha | dox-Zyyy | unwritten | dox-Zyyy-ET (Ethiopia) | |
| Muda | ymd-Zyyy | unknown | ymd-Zyyy-CN (China) | |
| Mugali | lmh-Zyyy | unwritten | lmh-Zyyy-NP (Nepal) | |
| Muji, Northern | ymx-Zyyy | unknown | ymx-Zyyy-CN (China) | |
| Muji, Qila | ymq-Zyyy | unwritten | ymq-Zyyy-CN (China) | |
| Muji, Southern | ymc-Zyyy | unknown | ymc-Zyyy-CN (China) | |
| Mukha-Dora | mmk-Zyyy | unknown | mmk-Zyyy-IN (India) | |
| Mulam | mlm-Zyyy | unwritten | mlm-Zyyy-CN (China) | |
| Mulao | giu-Zyyy | unwritten | giu-Zyyy-CN (China) | |
| Multiple languages | mul-Zyyy | unknown | mul-Zyyy-001 | |
| Musasa | smm-Zyyy | unwritten | smm-Zyyy-NP (Nepal) | |
| Mushungulu | xma-Zyyy | unknown | xma-Zyyy-SO (Somalia) | |
| Muya | mvm-Zyyy | unknown | mvm-Zyyy-CN (China) | |
| Muzi | ymz-Zyyy | unwritten | ymz-Zyyy-CN (China) | |
| Mycenaean Greek | gmy-Zyyy | unknown | gmy-Zyyy-GR (Greece) | |
| Mysian | yms-Zyyy | unknown | yms-Zyyy-TR (Turkey) | |
| Māhārāṣṭri Prākrit | pmh-Zyyy | unknown | pmh-Zyyy-IN (India) | |
| Naaba | nao-Zyyy | unwritten | nao-Zyyy-NP (Nepal) | |
| Nagarchal | nbg-Zyyy | unwritten | nbg-Zyyy-IN (India) | |
| Nahali | nlx-Zyyy | unwritten | nlx-Zyyy-IN (India) | |
| Nahari | nhh-Zyyy | unknown | nhh-Zyyy-IN (India) | |
| Naluo | ylo-Zyyy | unknown | ylo-Zyyy-CN (China) | |
| Namuyi | nmy-Zyyy | unwritten | nmy-Zyyy-CN (China) | |
| Nanticoke | nnt-Zyyy | unwritten | nnt-Zyyy-US (United States) | |
| Nar Phu | npa-Zyyy | unwritten | npa-Zyyy-NP (Nepal) | |
| Narragansett | xnt-Zyyy | unwritten | xnt-Zyyy-US (United States) | |
| Narua | nru-Zyyy | unwritten | nru-Zyyy-CN (China) | |
| Nasu, Wumeng | ywu-Zyyy | unknown | ywu-Zyyy-CN (China) | |
| Natchez | ncz-Zyyy | unwritten | ncz-Zyyy-US (United States) | |
| Nawathinehena | nwa-Zyyy | unwritten | nwa-Zyyy-US (United States) | |
| Nayi | noz-Zyyy | unwritten | noz-Zyyy-ET (Ethiopia) | |
| Nding | eli-Zyyy | unwritten | eli-Zyyy-SD (Sudan) | |
| Nefamese | nef-Zyyy | unknown | nef-Zyyy-IN (India) | |
| Neo-Hittite | nei-Zyyy | unknown | nei-Zyyy-TR (Turkey) | |
| Nicobarese, Southern | nik-Zyyy | unknown | nik-Zyyy-IN (India) | |
| Nihali | nll-Zyyy | unwritten | nll-Zyyy-IN (India) | |
| Nisi | yso-Zyyy | unknown | yso-Zyyy-CN (China) | |
| Nisu, Northern | yiv-Zyyy | unwritten | yiv-Zyyy-CN (China) | |
| Nisu, Northwestern | nsf-Zyyy | unwritten | nsf-Zyyy-CN (China) | |
| Niuatoputapu | nkp-Zyyy | unwritten | nkp-Zyyy-TO (Tonga) | |
| No linguistic content | zxx-Zyyy | unknown | zxx-Zyyy-001 | |
| Nomlaki | nol-Zyyy | unwritten | nol-Zyyy-US (United States) | |
| Nooksack | nok-Zyyy | unwritten | nok-Zyyy-US (United States) | |
| Nora | nrr-Zyyy | unknown | nrr-Zyyy-IN (India) | |
| Noric | nrc-Zyyy | unknown | nrc-Zyyy-XX | |
| Norn | nrn-Zyyy | unknown | nrn-Zyyy-GB (United Kingdom) | |
| Northern Kalapuya | nrt-Zyyy | unwritten | nrt-Zyyy-US (United States) | |
| Norwegian, Traveller | rmg-Zyyy | unknown | rmg-Zyyy-NO (Norway) | |
| Nottoway | ntw-Zyyy | unwritten | ntw-Zyyy-US (United States) | |
| Nottoway-Meherrin | nwy-Zyyy | unwritten | nwy-Zyyy-US (United States) | |
| Nubri | kte-Zyyy | unwritten | kte-Zyyy-NP (Nepal) | |
| Numidian | nxm-Zyyy | unknown | nxm-Zyyy-XX | |
| Nupbikha | npb-Zyyy | unwritten | npb-Zyyy-BT (Bhutan) | |
| Nyaheun | nev-Zyyy | unwritten | nev-Zyyy-LA (Laos) | |
| Nyaw | nyw-Zyyy | unknown | nyw-Zyyy-TH (Thailand) | |
| Nyenkha | neh-Zyyy | unwritten | neh-Zyyy-BT (Bhutan) | |
| Nyeu | nyl-Zyyy | unwritten | nyl-Zyyy-TH (Thailand) | |
| Obispeño | obi-Zyyy | unwritten | obi-Zyyy-US (United States) | |
| Ofo | ofo-Zyyy | unwritten | ofo-Zyyy-US (United States) | |
| Ohlone, Southern | css-Zyyy | unwritten | css-Zyyy-US (United States) | |
| Oki-No-Erabu | okn-Zyyy | unknown | okn-Zyyy-JP (Japan) | |
| Oko-Juwoi | okj-Zyyy | unknown | okj-Zyyy-IN (India) | |
| Old Cham | ocm-Zyyy | unknown | ocm-Zyyy-XX | |
| Old Chinese | och-Zyyy | unknown | och-Zyyy-CN (China) | |
| Old Frisian | ofs-Zyyy | unknown | ofs-Zyyy-NL (Netherlands) | |
| Old Hittite | oht-Zyyy | unknown | oht-Zyyy-TR (Turkey) | |
| Old Japanese | ojp-Zyyy | unknown | ojp-Zyyy-JP (Japan) | |
| Old Khmer | okz-Zyyy | unknown | okz-Zyyy-XX | |
| Old Korean (3rd-9th cent.) | oko-Zyyy | unknown | oko-Zyyy-KR (South Korea) | |
| Old Malay | omy-Zyyy | unknown | omy-Zyyy-XX | |
| Old Mon | omx-Zyyy | unknown | omx-Zyyy-XX | |
| Old Ossetic | oos-Zyyy | unknown | oos-Zyyy-XX | |
| Old Uighur | oui-Zyyy | unknown | oui-Zyyy-XX | |
| Olekha | ole-Zyyy | unwritten | ole-Zyyy-BT (Bhutan) | |
| Ong | oog-Zyyy | unwritten | oog-Zyyy-LA (Laos) | |
| Ongota | bxe-Zyyy | unwritten | bxe-Zyyy-ET (Ethiopia) | |
| Oroqen | orh-Zyyy | unknown | orh-Zyyy-CN (China) | |
| Oy | oyb-Zyyy | unknown | oyb-Zyyy-LA (Laos) | |
| Pa Di | pdi-Zyyy | unwritten | pdi-Zyyy-CN (China) | |
| Pa-Hng | pha-Zyyy | unwritten | pha-Zyyy-CN (China) | |
| Paekche | pkc-Zyyy | unknown | pkc-Zyyy-KR (South Korea) | |
| Pahari | phj-Zyyy | unwritten | phj-Zyyy-NP (Nepal) | |
| Palaic | plq-Zyyy | unknown | plq-Zyyy-TR (Turkey) | |
| Paliyan | pcf-Zyyy | unknown | pcf-Zyyy-IN (India) | |
| Papora-Hoanya | ppu-Zyyy | unknown | ppu-Zyyy-TW (China–Taiwan) | |
| Pardhan | pch-Zyyy | unwritten | pch-Zyyy-IN (India) | |
| Pardhi | pcl-Zyyy | unknown | pcl-Zyyy-IN (India) | |
| Parsi | prp-Zyyy | unknown | prp-Zyyy-IN (India) | |
| Parya | paq-Zyyy | unwritten | paq-Zyyy-TJ (Tajikistan) | |
| Pathiya | pty-Zyyy | unwritten | pty-Zyyy-IN (India) | |
| Pattapu | ptq-Zyyy | unwritten | ptq-Zyyy-IN (India) | |
| Patwin | pwi-Zyyy | unwritten | pwi-Zyyy-US (United States) | |
| Pear | pcb-Zyyy | unwritten | pcb-Zyyy-KH (Cambodia) | |
| Pecheneg | xpc-Zyyy | unknown | xpc-Zyyy-XX | |
| Pela | bxd-Zyyy | unwritten | bxd-Zyyy-CN (China) | |
| Pentlatch | ptw-Zyyy | unwritten | ptw-Zyyy-CA (Canada) | |
| Phala | ypa-Zyyy | unknown | ypa-Zyyy-CN (China) | |
| Phana’ | phq-Zyyy | unknown | phq-Zyyy-LA (Laos) | |
| Phangduwali | phw-Zyyy | unwritten | phw-Zyyy-NP (Nepal) | |
| Phola | ypg-Zyyy | unwritten | ypg-Zyyy-CN (China) | |
| Phola, Alo | ypo-Zyyy | unknown | ypo-Zyyy-CN (China) | |
| Pholo | yip-Zyyy | unknown | yip-Zyyy-CN (China) | |
| Phong-Kniang | pnx-Zyyy | unwritten | pnx-Zyyy-LA (Laos) | |
| Phowa, Ani | ypn-Zyyy | unwritten | ypn-Zyyy-CN (China) | |
| Phowa, Hlepho | yhl-Zyyy | unwritten | yhl-Zyyy-CN (China) | |
| Phowa, Labo | ypb-Zyyy | unwritten | ypb-Zyyy-CN (China) | |
| Phu Thai | pht-Zyyy | unwritten | pht-Zyyy-TH (Thailand) | |
| Phuan | phu-Zyyy | unwritten | phu-Zyyy-TH (Thailand) | |
| Phudagi | phd-Zyyy | unknown | phd-Zyyy-IN (India) | |
| Phuma | ypm-Zyyy | unknown | ypm-Zyyy-CN (China) | |
| Phupa | ypp-Zyyy | unknown | ypp-Zyyy-CN (China) | |
| Phupha | yph-Zyyy | unknown | yph-Zyyy-CN (China) | |
| Phuza | ypz-Zyyy | unwritten | ypz-Zyyy-CN (China) | |
| Pictish | xpi-Zyyy | unknown | xpi-Zyyy-GB (United Kingdom) | |
| Pidgin, Timor | tvy-Zyyy | unknown | tvy-Zyyy-TL (East Timor) | |
| Piro | pie-Zyyy | unwritten | pie-Zyyy-US (United States) | |
| Piscataway | psy-Zyyy | unwritten | psy-Zyyy-US (United States) | |
| Pisidian | xps-Zyyy | unknown | xps-Zyyy-TR (Turkey) | |
| Polabian | pox-Zyyy | unknown | pox-Zyyy-DE (Germany) | |
| Pomo, Eastern | peb-Zyyy | unwritten | peb-Zyyy-US (United States) | |
| Pomo, Northeastern | pef-Zyyy | unwritten | pef-Zyyy-US (United States) | |
| Pomo, Northern | pej-Zyyy | unwritten | pej-Zyyy-US (United States) | |
| Powari | pwr-Zyyy | unwritten | pwr-Zyyy-IN (India) | |
| Powhatan | pim-Zyyy | unwritten | pim-Zyyy-US (United States) | |
| Pu Ko | puk-Zyyy | unknown | puk-Zyyy-LA (Laos) | |
| Pumi, Northern | pmi-Zyyy | unwritten | pmi-Zyyy-CN (China) | |
| Pumi, Southern | pmj-Zyyy | unwritten | pmj-Zyyy-CN (China) | |
| Punic | xpu-Zyyy | unwritten | xpu-Zyyy-XX | |
| Purisimeño | puy-Zyyy | unwritten | puy-Zyyy-US (United States) | |
| Puyo | xpy-Zyyy | unknown | xpy-Zyyy-CN (China) | |
| Puyo-Paekche | xpp-Zyyy | unknown | xpp-Zyyy-CN (China) | |
| Pyu (Myanmar) | pyx-Zyyy | unknown | pyx-Zyyy-MM (Myanmar) | |
| Qatabanian | xqt-Zyyy | unknown | xqt-Zyyy-YE (Yemen) | |
| Qau | gqu-Zyyy | unwritten | gqu-Zyyy-CN (China) | |
| Qiang, Southern | qxs-Zyyy | unknown | qxs-Zyyy-CN (China) | |
| Queyu | qvy-Zyyy | unknown | qvy-Zyyy-CN (China) | |
| Quiripi | qyp-Zyyy | unwritten | qyp-Zyyy-US (United States) | |
| Raetic | xrr-Zyyy | unknown | xrr-Zyyy-IT (Italy) | |
| Ralte | ral-Zyyy | unknown | ral-Zyyy-IN (India) | |
| Rangkas | rgk-Zyyy | unknown | rgk-Zyyy-IN (India) | |
| Raute | rau-Zyyy | unwritten | rau-Zyyy-NP (Nepal) | |
| Razajerdi | rat-Zyyy | unknown | rat-Zyyy-IR (Iran) | |
| Reli | rei-Zyyy | unknown | rei-Zyyy-IN (India) | |
| Rer Bare | rer-Zyyy | unwritten | rer-Zyyy-ET (Ethiopia) | |
| Riang Lai | yin-Zyyy | unwritten | yin-Zyyy-MM (Myanmar) | |
| Rien | rie-Zyyy | unknown | rie-Zyyy-XX | |
| Romano-Greek | rge-Zyyy | unwritten | rge-Zyyy-GR (Greece) | |
| Romano-Serbian | rsb-Zyyy | unwritten | rsb-Zyyy-RS (Serbia) | |
| Romanova | rmv-Zyyy | unknown | rmv-Zyyy-001 | |
| Rongpo | rnp-Zyyy | unknown | rnp-Zyyy-IN (India) | |
| Ruga | ruh-Zyyy | unknown | ruh-Zyyy-IN (India) | |
| Rāziḥī | rzh-Zyyy | unknown | rzh-Zyyy-YE (Yemen) | |
| Saam | raq-Zyyy | unwritten | raq-Zyyy-NP (Nepal) | |
| Saami, Kemi | sjk-Zyyy | unknown | sjk-Zyyy-XX | |
| Saami, Pite | sje-Zyyy | unknown | sje-Zyyy-SE (Sweden) | |
| Saaroa | sxr-Zyyy | unknown | sxr-Zyyy-TW (China–Taiwan) | |
| Sabine | sbv-Zyyy | unknown | sbv-Zyyy-XX | |
| Saek | skb-Zyyy | unwritten | skb-Zyyy-LA (Laos) | |
| Salar | slr-Zyyy | unwritten | slr-Zyyy-CN (China) | |
| Salchuq | slq-Zyyy | unknown | slq-Zyyy-IR (Iran) | |
| Salinan | sln-Zyyy | unwritten | sln-Zyyy-US (United States) | |
| Sallands | sdz-Zyyy | unknown | sdz-Zyyy-NL (Netherlands) | |
| Samre | sxm-Zyyy | unwritten | sxm-Zyyy-KH (Cambodia) | |
| Samtao | stu-Zyyy | unwritten | stu-Zyyy-MM (Myanmar) | |
| Samvedi | smv-Zyyy | unknown | smv-Zyyy-IN (India) | |
| Sangkong | sgk-Zyyy | unwritten | sgk-Zyyy-CN (China) | |
| Sansi | ssi-Zyyy | unwritten | ssi-Zyyy-IN (India) | |
| Sapuan | spu-Zyyy | unwritten | spu-Zyyy-LA (Laos) | |
| Sarikoli | srh-Zyyy | unknown | srh-Zyyy-CN (China) | |
| Sawknah | swn-Zyyy | unwritten | swn-Zyyy-LY (Libya) | |
| Scythian | xsc-Zyyy | unknown | xsc-Zyyy-XX | |
| Seke | skj-Zyyy | unwritten | skj-Zyyy-NP (Nepal) | |
| Selian | sxl-Zyyy | unknown | sxl-Zyyy-XX | |
| Sened | sds-Zyyy | unwritten | sds-Zyyy-TN (Tunisia) | |
| Senhaja Berber | sjs-Zyyy | unwritten | sjs-Zyyy-MA (Morocco) | |
| Sentinel | std-Zyyy | unwritten | std-Zyyy-IN (India) | |
| Seze | sze-Zyyy | unwritten | sze-Zyyy-ET (Ethiopia) | |
| Shabak | sdb-Zyyy | unknown | sdb-Zyyy-IQ (Iraq) | |
| Shabo | sbf-Zyyy | unwritten | sbf-Zyyy-ET (Ethiopia) | |
| Shasta | sht-Zyyy | unwritten | sht-Zyyy-US (United States) | |
| She | shx-Zyyy | unknown | shx-Zyyy-CN (China) | |
| Shehri | shv-Zyyy | unknown | shv-Zyyy-OM (Oman) | |
| Shendu | shl-Zyyy | unknown | shl-Zyyy-IN (India) | |
| Sherdukpen | sdp-Zyyy | unwritten | sdp-Zyyy-IN (India) | |
| Shinabo | snh-Zyyy | unknown | snh-Zyyy-XX | |
| Sholaga | sle-Zyyy | unknown | sle-Zyyy-IN (India) | |
| Shom Peng | sii-Zyyy | unwritten | sii-Zyyy-IN (India) | |
| Shuadit | sdt-Zyyy | unknown | sdt-Zyyy-FR (France) | |
| Shuhi | sxg-Zyyy | unwritten | sxg-Zyyy-CN (China) | |
| Shumcho | scu-Zyyy | unwritten | scu-Zyyy-IN (India) | |
| Sicanian | sxc-Zyyy | unknown | sxc-Zyyy-XX | |
| Sicel | scx-Zyyy | unknown | scx-Zyyy-XX | |
| Siculo Arabic | sqr-Zyyy | unknown | sqr-Zyyy-XX | |
| Sidetic | xsd-Zyyy | unknown | xsd-Zyyy-TR (Turkey) | |
| Sila | slt-Zyyy | unwritten | slt-Zyyy-LA (Laos) | |
| Sindarin | sjn-Zyyy | unknown | sjn-Zyyy-001 | |
| Siuslaw | sis-Zyyy | unwritten | sis-Zyyy-US (United States) | |
| Sivandi | siy-Zyyy | unknown | siy-Zyyy-IR (Iran) | |
| Skalvian | svx-Zyyy | unknown | svx-Zyyy-XX | |
| Soi | soj-Zyyy | unknown | soj-Zyyy-IR (Iran) | |
| Solano | xso-Zyyy | unwritten | xso-Zyyy-MX xso-Zyyy-US (United States) | |
| Somray | smu-Zyyy | unknown | smu-Zyyy-KH (Cambodia) | |
| Sonaga | ysg-Zyyy | unwritten | ysg-Zyyy-CN (China) | |
| Sonha | soi-Zyyy | unwritten | soi-Zyyy-NP (Nepal) | |
| Sorkhei | sqo-Zyyy | unknown | sqo-Zyyy-IR (Iran) | |
| Sorothaptic | sxo-Zyyy | unknown | sxo-Zyyy-XX | |
| Sou | sqq-Zyyy | unwritten | sqq-Zyyy-LA (Laos) | |
| South Picene | spx-Zyyy | unknown | spx-Zyyy-XX | |
| Southern Kalapuya | sxk-Zyyy | unknown | sxk-Zyyy-XX | |
| Sudovian | xsv-Zyyy | unknown | xsv-Zyyy-XX | |
| Sumerian | sux-Zyyy | unknown | sux-Zyyy-XX | |
| Sunam | ssk-Zyyy | unwritten | ssk-Zyyy-IN (India) | |
| Susquehannock | sqn-Zyyy | unknown | sqn-Zyyy-XX | |
| Tagargrent | oua-Zyyy | unwritten | oua-Zyyy-DZ (Algeria) | |
| Tagoi | tag-Zyyy | unwritten | tag-Zyyy-SD (Sudan) | |
| Tai Hongjin | tiz-Zyyy | unwritten | tiz-Zyyy-CN (China) | |
| Tai Khang | tnu-Zyyy | unknown | tnu-Zyyy-LA (Laos) | |
| Tai Long | thi-Zyyy | unknown | thi-Zyyy-LA (Laos) | |
| Tai Pao | tpo-Zyyy | unwritten | tpo-Zyyy-LA (Laos) | |
| Takelma | tkm-Zyyy | unknown | tkm-Zyyy-XX | |
| Talieng | tdf-Zyyy | unwritten | tdf-Zyyy-LA (Laos) | |
| Talodi | tlo-Zyyy | unwritten | tlo-Zyyy-SD (Sudan) | |
| Talossan | tzl-Zyyy | unknown | tzl-Zyyy-001 | |
| Talu | yta-Zyyy | unwritten | yta-Zyyy-CN (China) | |
| Taman | tcl-Zyyy | unwritten | tcl-Zyyy-MM (Myanmar) | |
| Tamang, Eastern Gorkha | tge-Zyyy | unwritten | tge-Zyyy-NP (Nepal) | |
| Tamazight, Temacine | tjo-Zyyy | unwritten | tjo-Zyyy-DZ (Algeria) | |
| Tamazight, Tidikelt | tia-Zyyy | unwritten | tia-Zyyy-DZ (Algeria) | |
| Tanglang | ytl-Zyyy | unwritten | ytl-Zyyy-CN (China) | |
| Tareng | tgr-Zyyy | unknown | tgr-Zyyy-LA (Laos) | |
| Taromi, Upper | tov-Zyyy | unknown | tov-Zyyy-IR (Iran) | |
| Tartessian | txr-Zyyy | unknown | txr-Zyyy-XX | |
| Taungyo | tco-Zyyy | unwritten | tco-Zyyy-MM (Myanmar) | |
| Tavoyan | tvn-Zyyy | unwritten | tvn-Zyyy-MM (Myanmar) | |
| Taznatit | grr-Zyyy | unwritten | grr-Zyyy-DZ (Algeria) | |
| Tegali | ras-Zyyy | unwritten | ras-Zyyy-SD (Sudan) | |
| Ten’edn | tnz-Zyyy | unwritten | tnz-Zyyy-TH (Thailand) | |
| Teressa | tef-Zyyy | unknown | tef-Zyyy-IN (India) | |
| Teshenawa | twc-Zyyy | unknown | twc-Zyyy-XX | |
| Thachanadan | thn-Zyyy | unwritten | thn-Zyyy-IN (India) | |
| Thopho | ytp-Zyyy | unknown | ytp-Zyyy-CN (China) | |
| Thudam | thw-Zyyy | unwritten | ||
| Tichurong | tcn-Zyyy | unwritten | tcn-Zyyy-NP (Nepal) | |
| Tillamook | til-Zyyy | unwritten | til-Zyyy-US (United States) | |
| Tima | tms-Zyyy | unwritten | tms-Zyyy-SD (Sudan) | |
| Timucua | tjm-Zyyy | unknown | tjm-Zyyy-XX | |
| Tokharian A | xto-Zyyy | unknown | xto-Zyyy-CN (China) | |
| Tokharian B | txb-Zyyy | unknown | txb-Zyyy-XX | |
| Toku-No-Shima | tkn-Zyyy | unknown | tkn-Zyyy-JP (Japan) | |
| Tonkawa | tqw-Zyyy | unwritten | tqw-Zyyy-US (United States) | |
| Torona | tqr-Zyyy | unwritten | tqr-Zyyy-SD (Sudan) | |
| Transalpine Gaulish | xtg-Zyyy | unknown | xtg-Zyyy-XX | |
| Traveller Scottish | trl-Zyyy | unwritten | trl-Zyyy-GB (United Kingdom) | |
| Tsat | huq-Zyyy | unwritten | huq-Zyyy-CN (China) | |
| Tseku | tsk-Zyyy | unwritten | tsk-Zyyy-CN (China) | |
| Tsetsaut | txc-Zyyy | unknown | txc-Zyyy-XX | |
| Tujia, Northern | tji-Zyyy | unknown | tji-Zyyy-CN (China) | |
| Tujia, Southern | tjs-Zyyy | unknown | tjs-Zyyy-CN (China) | |
| Tumshuqese | xtq-Zyyy | unknown | xtq-Zyyy-IR (Iran) | |
| Tumtum | tbr-Zyyy | unwritten | tbr-Zyyy-SD (Sudan) | |
| Tunica | tun-Zyyy | unwritten | tun-Zyyy-US (United States) | |
| Tunni | tqq-Zyyy | unknown | tqq-Zyyy-SO (Somalia) | |
| Tupinambá | tpw-Zyyy | unknown | tpw-Zyyy-XX | |
| Turi | trd-Zyyy | unknown | trd-Zyyy-IN (India) | |
| Tutelo | tta-Zyyy | unknown | tta-Zyyy-XX | |
| Tutong | ttg-Zyyy | unknown | ttg-Zyyy-BN (Brunei) | |
| Twana | twa-Zyyy | unwritten | twa-Zyyy-US (United States) | |
| T’en | tct-Zyyy | unknown | tct-Zyyy-CN (China) | |
| U | uuu-Zyyy | unwritten | uuu-Zyyy-CN (China) | |
| Ubykh | uby-Zyyy | unwritten | uby-Zyyy-TR (Turkey) | |
| Ugong | ugo-Zyyy | unwritten | ugo-Zyyy-TH (Thailand) | |
| Ullatan | ull-Zyyy | unwritten | ull-Zyyy-IN (India) | |
| Unami | unm-Zyyy | unwritten | unm-Zyyy-US (United States) | |
| Undetermined | und-Zyyy | unknown | und-Zyyy-001 | |
| Upper Umpqua | xup-Zyyy | unwritten | xup-Zyyy-US (United States) | |
| Urali | url-Zyyy | unwritten | url-Zyyy-IN (India) | |
| Urartian | xur-Zyyy | unknown | xur-Zyyy-TR (Turkey) | |
| Veddah | ved-Zyyy | unknown | ved-Zyyy-LK (Sri Lanka) | |
| Veluws | vel-Zyyy | unknown | vel-Zyyy-NL (Netherlands) | |
| Ventureño | veo-Zyyy | unwritten | veo-Zyyy-US (United States) | |
| Vishavan | vis-Zyyy | unknown | vis-Zyyy-IN (India) | |
| Wailaki | wlk-Zyyy | unwritten | wlk-Zyyy-US (United States) | |
| Wali | wll-Zyyy | unwritten | wll-Zyyy-SD (Sudan) | |
| Waling | wly-Zyyy | unwritten | wly-Zyyy-NP (Nepal) | |
| Wappo | wao-Zyyy | unwritten | wao-Zyyy-US (United States) | |
| War-Jaintia | aml-Zyyy | unwritten | aml-Zyyy-BD (Bangladesh) | |
| Warnang | wrn-Zyyy | unwritten | wrn-Zyyy-SD (Sudan) | |
| Waxianghua | wxa-Zyyy | unknown | wxa-Zyyy-CN (China) | |
| Wewaw | wea-Zyyy | unwritten | wea-Zyyy-MM (Myanmar) | |
| Weyto | woy-Zyyy | unwritten | woy-Zyyy-ET (Ethiopia) | |
| Woccon | xwc-Zyyy | unwritten | xwc-Zyyy-US (United States) | |
| Wutunhua | wuh-Zyyy | unknown | wuh-Zyyy-CN (China) | |
| Yaeyama | rys-Zyyy | unknown | rys-Zyyy-JP (Japan) | |
| Yakkha, Chhathare | luu-Zyyy | unwritten | luu-Zyyy-NP (Nepal) | |
| Yamphu, Southern | lrr-Zyyy | unwritten | lrr-Zyyy-NP (Nepal) | |
| Yana | ynn-Zyyy | unwritten | ynn-Zyyy-US (United States) | |
| Yassic | ysc-Zyyy | unknown | ysc-Zyyy-HU (Hungary) | |
| Yeniche | yec-Zyyy | unknown | yec-Zyyy-DE (Germany) | |
| Yerong | yrn-Zyyy | unknown | yrn-Zyyy-CN (China) | |
| Yinbaw | kvu-Zyyy | unwritten | kvu-Zyyy-MM (Myanmar) | |
| Yintale | kvy-Zyyy | unwritten | kvy-Zyyy-MM (Myanmar) | |
| Yola | yol-Zyyy | unknown | yol-Zyyy-GB (United Kingdom) | |
| Yonaguni | yoi-Zyyy | unknown | yoi-Zyyy-JP (Japan) | |
| Yong | yno-Zyyy | unknown | yno-Zyyy-TH (Thailand) | |
| Yoron | yox-Zyyy | unknown | yox-Zyyy-JP (Japan) | |
| Yoy | yoy-Zyyy | unwritten | yoy-Zyyy-TH (Thailand) | |
| Yugur, East | yuy-Zyyy | unknown | yuy-Zyyy-CN (China) | |
| Yugur, West | ybe-Zyyy | unknown | ybe-Zyyy-CN (China) | |
| Yuki | yuk-Zyyy | unwritten | yuk-Zyyy-US (United States) | |
| Yurats | rts-Zyyy | unknown | rts-Zyyy-XX rts-Zyyy-RU (Russian Federation) | |
| Zakhring | zkr-Zyyy | unknown | zkr-Zyyy-CN (China) | |
| Zarphatic | zrp-Zyyy | unknown | zrp-Zyyy-FR (France) | |
| Zauzou | zal-Zyyy | unknown | zal-Zyyy-CN (China) | |
| Zay | zwa-Zyyy | unwritten | zwa-Zyyy-ET (Ethiopia) | |
| Zayein | kxk-Zyyy | unwritten | kxk-Zyyy-MM (Myanmar) | |
| Zemgalian | xzm-Zyyy | unknown | xzm-Zyyy-XX | |
| Zhaba | zhb-Zyyy | unwritten | zhb-Zyyy-CN (China) | |
| Zhang-Zhung | xzh-Zyyy | unknown | xzh-Zyyy-CN (China) | |
| Zokhuo | yzk-Zyyy | unknown | yzk-Zyyy-CN (China) | |
| sTodsde | jih-Zyyy | unknown | jih-Zyyy-CN (China) | |
| Öñge | oon-Zyyy | unwritten | oon-Zyyy-IN (India) |