| Fitz | | FITS | English (Rare) | |
| Fitzroy | | FITS-roi | English (Rare) | |
| Flanagan | | - | English (Rare) | |
| Flannery | | FLAN-ə-ree | English (Rare) | |
| Fletcher | | FLECH-ər | English | |
| Fleur | | FLUUR (French, Dutch), FLUR (English) | French, Dutch, English (Rare) | |
| Fleurette | | flə-RET (English) | French (Rare), Dutch (Rare), English (Rare) | |
| Flick | | FLIK | English | |
| Flo | | FLO | English | |
| Floella | | flo-EL-ə | English (Rare) | |
| Flora | | FLAWR-ə (English), FLO-rah (German) | English, German, Italian, Roman Mythology | |
| Florence | | FLAWR-ənts (English), flo-RAWNS (French) | English, French | |
| Floretta | | flo-RE-tah (German) | English, German (Rare) | |
| Florrie | | FLAWR-ee | English | |
| Flossie | | FLAWS-ee | English | |