| Flanagan | | - | English (Rare) | |
| Flannery | | FLAN-ə-ree | English (Rare) | |
| Flavia | | FLAH-vyah (Italian, Spanish) | Italian, Spanish, Romanian, Ancient Roman | |
| Flaviana | | flah-VYAH-nah (Italian) | Ancient Roman, Italian | |
| Flavianus | | - | Ancient Roman | |
| Flavie | | fla-VEE | French | |
| Flavien | | fla-vee-AWN | French | |
| Flavienne | | fla-vee-EN | French | |
| Flavius | | - | Ancient Roman | |
| 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) | |