| Abbreviation | Definition |
|---|---|
| FIJ | Fijian |
| FIN | Finland |
| FIN | Finnish |
| FIU | Finno- Ugrian (Other) |
| FMP | FE'FE': a language of Cameroon |
| FON | Fon |
| FRA | French |
| FRE | French |
| FRK | Frankish: an extinct language of Germany |
| FRM | French, Middle (ca. 1400-1600) |
| FRN | French |
| FRO | French, Old (842- ca. 1400) |
| FRY | Frisian |
| FUL | Fulah |
| FYR | Former Yugoslav Republic |
| GAA | Ga |
| GAE | Gaelic (Scots) |
| GAI | Irish |
| GAY | Gayo |
| GDH | Gaelic (Scots) |