Languages written with Khmer script
| Language | Writing System Code | Writing System Status | SLDR/CLDR locale | Regional variants |
|---|---|---|---|---|
| Brao | brb-Khmr | in use | brb (SLDR)  | brb-Khmr-KH (Cambodia) |
| Bunong | cmo-Khmr | in use | cmo_Khmr (SLDR) | cmo-Khmr-KH (Cambodia) |
| Jarai | jra-Khmr | in use | jra_Khmr (SLDR) | jra-Khmr-KH (Cambodia) |
| Kavet | krv-Khmr | in use | krv-Khmr-KH (Cambodia) | |
| Khmer | km-Khmr | in use | km (CLDR) | km-Khmr-KH (Cambodia) |
| Khmer, Northern | kxm-Khmr | in use | kxm-Khmr-TH (Thailand) | |
| Kraol | rka-Khmr | unwritten | rka-Khmr-KH (Cambodia) | |
| Krung | krr-Khmr | in use | krr (SLDR) | krr-Khmr-KH (Cambodia) |
| Kuay | kdt-Khmr | in use | kdt_Khmr (SLDR) | kdt-Khmr-KH (Cambodia) |
| Middle Khmer (1400 to 1850 CE) | xhm-Khmr | in use | xhm-Khmr-KH (Cambodia) | |
| Old Khmer | okz-Khmr | in use | okz-Khmr-KH (Cambodia) | |
| Pali | pi-Khmr | in use | pi-Khmr-IN (India) | |
| Pear | pcb-Khmr | unwritten | pcb-Khmr-KH (Cambodia) | |
| Somray | smu-Khmr | in use | smu-Khmr-KH (Cambodia) | |
| Tampuan | tpu-Khmr | in use | tpu (SLDR) | tpu-Khmr-KH (Cambodia) |