Languages written with Greek script
| Language | Writing System Code | Writing System Status | SLDR/CLDR locale | Regional variants |
|---|---|---|---|---|
| Albanian | sq-Grek | in use | sq-Grek-GR (Greece) | |
| Albanian, Arbëreshë | aae-Grek | obsolete | aae-Grek-IT (Italy) | |
| Albanian, Arvanitika | aat-Grek | in use | aat-Grek-GR (Greece) | |
| Arabic, Cypriot | acy-Grek | obsolete | acy-Grek-CY (Cyprus) | |
| Aromanian | rup-Grek | in use | rup-Grek-GR (Greece) | |
| Bactrian | xbc-Grek | in use | xbc-Grek-XX | |
| Balkan Gagauz Turkish | bgx-Grek | in use | bgx-Grek-TR (Turkey) | |
| Cappadocian Greek | cpg-Grek | in use | cpg-Grek-GR (Greece) | |
| Coptic | cop-Grek | in use | cop-Grek-EG (Egypt) | |
| Dacian | xdc-Grek | in use | xdc-Grek-XX | |
| Eteocretan | ecr-Grek | in use | ecr-Grek-GR (Greece) | |
| Gagauz | gag-Grek | obsolete | gag-Grek-MD (Moldova) | |
| Greek | el-Grek | in use | el (CLDR)  | el-Grek-CY (Cyprus) el-Grek-GR (Greece) |
| Greek, Ancient | grc-Grek | in use | grc-Grek-GR (Greece) | |
| Interglossa | igs-Grek | in use | igs-Grek-001 | |
| Phrygian | xpg-Grek | in use | xpg-Grek-TR (Turkey) | |
| Pontic | pnt-Grek | in use | pnt-Grek-GR (Greece) | |
| Romani, Balkan | rmn-Grek | in use | rmn-Grek-GR (Greece) | |
| Sicanian | sxc-Grek | in use | sxc-Grek-XX | |
| Sicel | scx-Grek | in use | scx-Grek-IT (Italy) | |
| Thracian | txh-Grek | in use | txh-Grek-XX | |
| Tsakonian | tsd-Grek | in use | tsd-Grek-GR (Greece) | |
| Turkish | tr-Grek | obsolete | tr-Grek-TR (Turkey) | |
| Urum | uum-Grek | in use | uum-Grek-GE (Georgia) | |
| Yevanic | yej-Grek | in use | yej-Grek-GR yej-Grek-IL (Israel) |