| Columbia | Columbia |
| Columbia Records | Columbia Records |
| Columbia River | Columbia |
| Columbia University | Columbia University |
| Columbidae | Due |
| Columbiformes | Due |
| columbine | akeleje |
| Columbus | Columbus |
| Columbus Blue Jackets | Columbus Blue Jackets |
| Column of Phocas | Fokas-søjlen |
| Com | COM |
| COM file | COM |
| Coma | Koma |
| Coma Berenices | Berenikes Lokker |
| Comarca | Herredet |
| Comarcas of Spain | Herredet |
| comb | kam |
| combat | slag |
| combative | kamplysten |
| combination | kombination |
| combination effect | kombinationsvirkning |
| Combinatorial mathematics | Kombinatorik |
| combine | kombinere |
| combine harvester | mejetærsker |
| combined cycle-power station | kombineret kraftværk |
| Combined heat and power | Distribueret elproduktion |
| Combined oral contraceptive pill | P-pille |
| combined transport | kombineret transport |
| combined waste water | kombineret spildevand |
| combustibility | brændbarhed |
| combustion | forbrænding |
| combustion engine | forbrændingsmotor |
| combustion gas | forbrændingsgas |
| Combustion point | Antændelsestemperatur |
| combustion residue | forbrændingsrest |
| come | komme |
| come about | ske |
| come across | træffe |
| come out of the closet | komme ud af skabet |
| come to a halt | standse |
| Comecon | COMECON |
| Comedy | Komedie |
| comet | komet |
| Comet Hale-Bopp | Hale-Bopp |
| Comet tank | Komet |
| comeuppance | få som fortjent |
| comfort | trøste |
| comfortable | bekvem |
| comic | sjov |
| Comic Book Guy | Comic Book Guy |
| comical | sjov |
| Cominform | Kominform |
| Coming Up for Air | En mundfuld frisk luft |
| Comino | Comino |
| Comintern | Komintern |
| comitology | komitologi |
| Comma | Komma |
| command | befaling |
| Command line interpreter | Unix-skal |
| Command pattern | Kommando |
| Commandant of the Marine Corps | Commandant of the Marine Corps |
| Commander Islands | Kommandørøerne |
| Commander Keen series | Commander Keen |
| Commandment | Kommando |
| Commedia dell'arte | Commedia dell'arte |
| Commelinales | Tradescantia-ordenen |
| commemorative | særfrimærke |
| Commemoratively | Hukommelse |
| commence | begynde |
| commencement | begyndelse |
| commend | rose |
| Commensurately massive | Kolossal |
| commerce | handel |
| commercial | reklame |
| commercial fishery | kommercielt fiskeri |
| commercial law | handelsret |
| commercial noise | støj fra erhvervsvirksomheder |
| Commercial show | Handelsmesse |
| commercial traffic | erhvervsmæssig transport |
| commercial transaction | handelstransaktion |
| commercial vehicle | erhvervskøretøj |
| commercialisation | kommercialisering |
| Commerzbank Tower | Commerzbank-Tower |
| Commerzbank-Arena | Commerzbank-Arena |
| Commewijne District | Commewijne |
| Commewijne River | Commewijne |
| Commicerate | Have medlidenhed |
| commissioner | kommissær |
| commit suicide | begå selvmord |
| Commitment scheme | Kryptografi |
| committee | komité |
| Committee of Permanent Representatives | Coreper |
| Committee to Re-elect the President | Komiteen for genvalg af præsidenten |
| Commodore International | Commodore International |
| Commodore Smoker | Kaptajn Smoker |
| Commodus | Commodus |
| common | sædvanlig |
| common agreement | fælles regler |
| common agricultural policy | den fælles landbrugspolitik |
| common agricultural policy of the EU | den fælles landbrugspolitik |
| Common blackbird | Solsort |
| Common Bluebell | Skilla |
| Common Butterbur | Rød Hestehov |
| common chickweed | almindelig fuglegræs |
| Common chiffchaff | Gransanger |
| common cold | forkølelse |
| common commercial policy | den fælles handelspolitik |
| Common Cottongrass | Smalbladet Kæruld |
| Common Course | Fælles Kurs |
| Common Cuttlefish | Sepiablæksprutte |
| Common dace | Hassel |
| common denominator | fællesnævner |
| Common Dogwood | Rød Kornel |
| Common drain | Fælles drain |
| Common Dwarf Mongoose | Stribet Hyæne |
| common eider | edderfugl |
| Common Era | Anno Domini |
| Common evenig primrose | Natlys-familien |
| common fraction | almindelig brøk |
| Common fractions | Brøk |
| Common Frog | Butsnudet frø |
| Common Gateway Interface | CGI |
| common goldeneye | hvinand |
| Common greenshank | Hvidklire |
| common gull | stormmåge |
| Common Hawthorn | Engriflet Hvidtjørn |
| Common Hazel | Almindelig Hassel |
| common hepatica | blå anemone |
| Common Horse-chestnut | Almindelig Hestekastanje |
| Common horsechestnut | Almindelig Hestekastanje |
| Common house martin | Bysvale |
| Common house-martin | Bysvale |
| Common inn stay | Service |
| Common Intermediate Language | Common Intermediate Language |
| common kestrel | tårnfalk |
| Common Kingfisher | Isfugl |
| Common Medlar | Mispel |
| Common Noctule | Brunflagermus |
| common noun | appellativ |
| Common Octopus | Ottearmet blæksprutte |
| Common Periwinkle | Almindelig strandsnegl |
| Common Pipistrelle | Dværgflagermus |
| Common Pochard | Taffeland |
| Common Raccoon | Almindelig vaskebjørn |
| Common Redshank | Rødben |
| common redstart | rødstjert |
| Common Rue | Ruth |
| Common sawfish | Saw |
| common snipe | dobbeltbekkasin |
| Common soft wheat | Brød-Hvede |
| Common sole | Tunge |
| Common source | Fælles source |
| Common Spadefoot | Løgfrø |
| common tariff policy | den fælles toldpolitik |
| Common Teal | Krikand |
| Common Treecreeper | Træløber |
| Common Unix Printing System | Common Unix Printing System |
| common whitefish | helt |
| Common wood pigeon | Ringdue |
| Common-mode rejection ratio | CMRR |
| Common-pool resource | Offentligt gode |
| Commonwealth | Commonwealth of Nations |
| Commonwealth of Australia | Australien |
| Commonwealth of Dominica | Dominica |
| Commonwealth of Independent States | SNG |
| Commonwealth of Nations | Commonwealth of Nations |
| Commonwealth of the Bahamas | Bahamas |
| commune | kommune |
| Communes of France | Kommune |
| communication | beretning |
| Communication studies | Kommunikation |
| communication-cord | nødbremse |
| communications | kommunikation |
| communications industry | kommunikationsindustri |
| communications policy | kommunikationspolitik |
| communications system | kommunikationssystem |
| Communion | Altergang |
| communism | kommunisme |
| Communist Party in Denmark | Kommunistisk Parti i Danmark |
| Communist Party of Austria | KPÖ |
| Communist Party of Brazil | Brasiliens Kommunistiske Parti |
| Communist Party of Chile | Chiles Kommunistiske Parti |
| Communist Party of China | Kinas kommunistiske parti |
| Communist Party of Denmark | Danmarks Kommunistiske Parti |
| Communist Party of Germany | Kommunistische Partei Deutschlands |
| Communist Party of Nepal | Nepals kommunistiske parti |
| Communist Party of San Marino | San Marinos kommunistiske parti |
| Communist Party of Venezuela | Venezuelas Kommunistiske Parti |
| Communist regime | Kommunisme |
| community | samfund |
| Community act | fælleskabsretsakt |
| Community bicycle program | Bycykel |
| Community budget | fællesskabsbudget |
| community facility | fællesskabsfacilitet |
| Community finance | fællesskabsfinansiering |
| Community garden | Kolonihave |
| Community gardening | Kolonihave |
| Community law | fællesskabsret |
| Community legal system | Fællesskabernes retssystem |
| Community ruling | fællesskabsbestemmelse |
| Community Trade Mark | EU-varemærket |
| community-pays principle | princippet om |
| Commuter belt | Afvandingsareal |
| Commuter town | Soveby |
| commuter traffic | pendlertrafik |
| Como | Comosøen |
| Comoro Islands | Comorerne |
| Comoros | Comorerne |
| Comoros Islands | Comorerne |
| Compact Disc | Cd |
| compact fluorescent lamp | sparepære |
| Compact manifold | Varietet |
| compactification | kompaktifikation |
| compaction | kompaktion |
| Companion cavalry | Æter |
| company | virksomhed |
