| 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 |
| four-poster | hemelbed |
| four-poster bed | hemelbed |
| four-speed gear | vierversnellingsnaaf |
| Four-spotted Chaser | Viervlek |
| four-stroke engine | viertaktmotor |
| Four-toed Hedgehog | Witbuikegel |
| Four-toed salamander | Vierteensalamander |
| four-wheel | vierwielig |
| four-wheel drive | vierwielaandrijving |
| four-wheeler | vierwielig voertuig |
| Fourdrinier machine | Papiermachine |
| Foureye butterflyfish | Vierogige koraalvlinder |
| Fourier | Fourier |
| Fourier analysis | Fourieranalyse |
| Fourier series | Fourierreeks |
| Fourier transform | Fouriertransformatie |
| Fourqueux | Fourqueux |
| Fourragère | Nestels |
| fourscore | tachtig |
| foursome | kwartet |
| foursquare | vastberaden |
| fourteen | veertien |
| fourteen days | veertien dagen |
| Fourteen Holy Helpers | Noodhelpers |
| Fourteen Points | Veertien Punten |
| fourteenth | veertiende |
| Fourteenth Amendment to the United States Constitution | Veertiende amendement van de grondwet van de Verenigde Staten |
| fourth | vierde |
| Fourth Age | Vierde Era |
| Fourth Anglo-Dutch War | Vierde Engels-Nederlandse Oorlog |
| Fourth Balkenende cabinet | Kabinet-Balkenende IV |
| Fourth Council of Constantinople | Concilie van Constantinopel IV |
| Fourth Council of the Lateran | Concilies van Lateranen |
| Fourth Crusade | Vierde Kruistocht |
| Fourth International | Vierde Internationale |
| Fourth Macedonian War | Vierde Macedonische oorlog |
| Fourth Republic | Vierde Franse Republiek |
| fourth stomach | lebmaag |
| fourth wall | vierde wand |
| Fourth World | Minst ontwikkelde landen |
