| Cluedo | Cluedo |
| clueless | aningslös |
| Clugin | Clugin |
| Cluj | Cluj |
| Cluj County | Cluj |
| Cluj-Napoca | Cluj-Napoca |
| clump | klump |
| clumsily | klumpigt |
| clumsiness | klumpighet |
| clumsy | klumpig |
| clumsy person | klåpare |
| clung to | hålla vid fast |
| Cluny | Cluny |
| Cluny Abbey | Cluny |
| Clupeidae | Sillfiskar |
| Clupeiformes | Sillartade fiskar |
| cluster | grupp |
| cluster bomb | klusterbomb |
| Cluster of galaxies | Galaxhop |
| clusters | klungor |
| Clusters of galaxies | Galaxhop |
| clutch | hålla fast |
| clutch at | gripa efter |
| clutch bag | handväska |
| clutching | fasthållande |
| clutching-tongs | griptång |
| clutter | röra |
| clutter up | fullproppa |
| cluttered | oordnad |
| Clyde Tombaugh | Clyde Tombaugh |
| Clydesdale | Clydesdale |
| Clymene Dolphin | Hjälmdelfin |
| Clytemnestra | Klytaimnestra |
| Clásica de San Sebastián | Clásica de San Sebastián |
| Cláudio Ibrahim Vaz Leal | Branco |
| Cláudio Taffarel | Cláudio Taffarel |
| Clémence Poésy | Clémence Poésy |
| Cléo de Mérode | Cléo de Mérode |
| CM Punk | CM Punk |
| CMDB | CMDB |
| CML | Kronisk myeloisk leukemi |
| CMOS | CMOS |
| CMYK | CMYK |
| CMYK color model | CMYK |
| CN | CN |
| CN Tower | CN Tower |
| CNC | CNC |
| CNET | CNET |
| CNET Networks | CNET |
| Cnidaria | Nässeldjur |
| CNN | CNN |
| CO | CO |
| Co-counselling | Parsamtal |
| co-determination | medbestämmande |
| co-ed | samundervisnings- |
| co-education | samundervisning |
| co-educational | samundervisnings- |
| Co-evolution | Samevolution |
| co-incineration | medförbränning |
| co-op | kooperativt företag |
| co-operate | samarbeta |
| co-operation | kollaboration |
| co-operation policy | samarbetspolitik |
| co-operation principle | samarbetsprincip |
| co-operative | kooperativt företag |
| co-operator | kollega |
| co-opt | välja in |
| co-ordinate | koordinera |
| co-ordinate system | koordinatsystem |
| co-ordination | koordination |
| co-ordinator | koordinator |
| co-owner | medägare |
| co-ownership | delägarskap |
| co-pilot | tredjepilot |
| co-plaintiff | medkärande |
| co-runners | medlöpare |
| co-star | man som spelar ena huvudrollen |
| co-worker | kollega |
| coach | kupé |
| Coach-driver | Kusken |
| Coachella Valley | Coachella Valley |
| Coachella Valley Music and Arts Festival | Coachella Valley Music and Arts Festival |
| coaching | träning |
| coachman | kusk |
| coagulant | koagel |
| coagulate | koagulera |
| coagulated | klumpig |
| coagulating | förstelning |
| coagulation | koagulation |
| Coahuila | Coahuila |
| coal | kol |
| Coal fish | Pollachius |
| coal industry | kolindustri |
| coal liquefaction | överföring av kol till vätska |
| coal mine | kolgruva |
| coal mining | kolbrytning |
| coal oil | fotogen |
| coal refining | kolraffinering |
| coal technology | kolteknik |
| coal-based energy | kolbaserad energi |
| coal-fired power plant | kolkraftverk |
| coal-mine | kolgruva |
| Coala bear | Koala |
| coalesce | sluta sig samman |
| coalescence | sammansmältning |
| coalescer | koalesator |
| coalfield | kolfält |
| coalition | block |
| Coalition for Bulgaria | Koalition för Bulgarien |
| coalpit | kolgruva |
| Coandă effect | Coandaeffekt |
| coarse | oförskämd |
| Coarse salt | Natriumklorid |
| coarsen | förgrova |
| coarseness | råhet |
| Coarticulation | Koartikulation |
| coast | kust |
