| fount | lettersoort |
| Fount of honour | Fons honorum |
| fountain | fontein |
| Fountain of Neptune | Neptunusfontein |
| Fountain of Youth | Fontein van de Eeuwige Jeugd |
| fountain pen | vulpen |
| Fountains of Wayne | Fountains of Wayne |
| Fouquières-lès-Béthune | Fouquières-lès-Béthune |
| four | vier |
| Four Asian Tigers | Aziatische Tijgers |
| Four bar linkage | Vierstangenmechanisme |
| Four bombs rock London | Londen opgeschrikt door explosies |
| Four Books | Vier Boeken |
| Four color theorem | Vierkleurenstelling |
| Four Corners | Four Corners |
| Four Corners Monument | Four Corners |
| Four Days Battle | Vierdaagse Zeeslag |
| Four Days of Dunkirk | Vierdaagse van Duinkerke |
| Four Hills Tournament | Vierschansentoernooi |
| Four Horsemen of the Apocalypse | de vier ruiters van de Apocalyps |
| Four humours | Humores |
| four hundred | vierhonderd |
| Four Noble Truths | Vier nobele waarheden |
| four of a kind | carré |
| Four Pillars of the Green Party | Beginselen van Agalev |
| Four Rooms | Four Rooms |
| Four Seasons | Four Seasons |
| Four sons of Horus | Vier zonen van Horus |
| Four Spot Day Gecko | Pauwoogdaggekko |
| Four stages of enlightenment | Sotapanna |
| Four stags of Yggdrasill | Dvalin |
| Four Temperaments | Humores |
| Four Thirds System | Four Thirds |
| four times as much | viervoudig |
| Four Weddings and a Funeral | Four Weddings and a Funeral |
| Four-character idiom | Chinese spreekwoorden |
| Four-color process | CMYK |
| four-cornered | vierhoekig |
| four-engined | viermotorig |
| Four-eyed fish | Vieroogvissen |
| Four-eyed frog | Vieroogkikker |
| four-eyes | brillemans |
| four-footed | viervoetig |
| Four-horned Antelope | Vierhoornantilope |
| four-in-hand | vierspan |
| Four-in-hand knot | Four-in-hand |
| four-lane highway | vierbaansweg |
| four-leaf clover | klavertjevier |
| four-legged | vierpotig |
