| Feliks | | fye-LEEKS (Russian), fee-LEEKS (Russian), FE-leeks (Polish) | Russian, Slovene, Polish | |
| Felix | | FE-liks (German, Swedish), FAY-liks (Dutch), FEE-liks (English) | German, Dutch, Swedish, Norwegian, Danish, English, Romanian, Ancient Roman, Biblical, Biblical Lati | |
| Femie | | FEM-ee | English (Rare) | |
| Fenton | | FEN-tən | English | |
| Ferdie | | FUR-dee | English | |
| Ferdinand | | FER-dee-nahnt (German, Dutch), FUR-di-nand (English), FER-dee-nahnd (Finnish) | German, French, Dutch, English, Czech, Slovene, Finnish, Ancient Germanic | |
| Ferdy | | FUR-dee | English | |
| Fern | | FURN | English | |
| Fernand | | fer-NAWN | French | |
| Fernande | | fer-NAWND | French | |
| Ferne | | FURN | English | |
| Festus | | FES-təs (English) | Ancient Roman, Biblical Latin, Biblical | |
| Fiacre | | - | French | |
| Fifi | | fee-FEE | French | |
| Filibert | | FEE-lee-bert (German) | German, Dutch, Ancient Germanic | |