| flöte | float |
| FM | FM |
| FM-ligan i ishockey | SM-liiga |
| FM-syntes | Frequency modulation synthesis |
| FM-sändare | FM transmitter |
| FMEA | Failure mode and effects analysis |
| FMN | Flavin mononucleotide |
| FN | UN |
| FN FAL | FN FAL |
| FN FNC | FN FNC |
| FN SCAR | FN SCAR |
| FN-dagen | United Nations Day |
| FN-flaggan | Flag of the United Nations |
| FN-sekretariatet | United Nations Secretariat |
| FN-stadgan | United Nations Charter |
| Fnac | Fnac |
| fnask | tramp |
| fniss | titter |
| fnissa | snigger |
| fnissande | snigger |
| fnitter | cackle |
| fnittra | titter |
| fnittrande | tittering |
| FNL | National Front for the Liberation of South Vietnam |
| fnoskig | weak-minded |
| fnurra | kink |
| fnysa | sniff |
| fnöske | tinder |
| foajé | lounge |
