| Flegias | Phlegyas |
| Flegonte di Tralles | Phlegon of Tralles |
| Flein | Flein |
| Fleischwangen | Fleischwangen |
| Flekkefjord | Flekkefjord |
| Fleming | Fleming |
| flemma | phlegm |
| flemmatico | cool |
| Flemmatizzare | Drop |
| Flemming Rasmussen | Flemming Rasmussen |
| Flen | Flen Municipality |
| Flensburg | Flensburg |
| Flerden | Flerden |
| Flero | Flero |
| Flesberg | Flesberg |
| Flesh Gordon - andata e ritorno al pianeta Korno | Flesh Gordon |
| flessibile | flexible |
| flessibilità | flexibility |
| flessibilità dell'approccio ambientale | flexible approach to environmental protection |
| flessiblie | variable |
| flessimetro | deflectometer |
| Flessinga | Flushing |
| flessione | diffraction |
| flessuosità | gracefulness |
| flessuoso | supple |
| flessìbile | flexible |
| Fletcher Henderson | Fletcher Henderson |
| flettere | inflect |
| Fleury | Fleury |
| Flevoland | Flevoland |
| Flexible manufacturing system | Flexible manufacturing system |
| flicorno | flugelhorn |
| Flieden | Flieden |
| Fließ | Polar fleece |
| Flight Information Region | Flight Information Region |
| Flightplan - Mistero in volo | Flightplan |
| Flims | Flims |
| Flinders Petrie | Flinders Petrie |
| Flintsbach am Inn | Flintsbach |
| Flintshire | Flintshire |
| Flip | Flip jump |
| Flip-flop | Flip-flop |
| flipper | pinball machine |
| flirt | flirtation |
| flirtare | flirt |
| Floating Point Unit | Floating point unit |
| Floating storage and offloading unit | Floating storage and offloading unit |
| Flobecq | Flobecq |
| flocculante | flocculant |
| flocculazione | flocculation |
| Flond | Flond |
| Flood | IRC flood |
| Floor Jansen | Floor Jansen |
| floppy | floppy disk |
| floppy disk | diskette |
| flora | flora |
| Flora alpina | Alpine flora |
| flora batterica | bacterial flora |
| flora e fauna selvatiche | wildlife |
| Flora Tallinn | FC Flora Tallinn |
| Florac | Florac |
| Floralia | Floralia |
| floreale | floral |
| Florence Devouard | Florence Devouard |
| Florence Foster Jenkins | Florence Foster Jenkins |
| Florence Griffith-Joyner | Florence Griffith-Joyner |
| Florence Nightingale | Florence Nightingale |
