| Cluj Napoca | Cluj-Napoca | Cluny |
| Cluny (občina) | Cluny (opatija) | Cluny (razločitev) |
| Clupea harengus pilchardus | Clupea pilchardus | Clusijev svišč |
| Clwb Pêl-droed Dinas Abertawe | CLX (Delphi) | Clyde Cowan |
| Clyde King (veslač) | Clyde Lorrain Cowan | Clyde Tombaugh |
| Clyde W. Tombaugh | Clyde Whitlock King | Clyde William Tombaugh |
| Clysia ambiguella | Clytus arietis | Cm |
| CM CRI | CM E.I.-S.M.O.M. | CMA CGM |
| CMAMMA | CMAS | Cm³ |
| CMC | CMC Leopard | CMC Publikum |
| Cmepius | Cmereška Gorca | Cmir |
| CMR | CMS | Cms |
| CMT Crossroads | Cmurek | CMYK |
| CMYK barvni model | CMYK barvni sistem | CN Leo |
| CN Leva | CN Tower | CNCO |
| CNH Global | Cnidaria | CNN |
| Co | CO | CO2 |
| Coaching | Coaching - Metoda individualnega usmerjanja | Coal Exchange, Cardiff |
| Coatlicue | Cobalt Silver Kings | Cobenzl |
| Cobert | Cobis | COBISS |
| Cobiss | COBISS (identifikator) | COBISS.SR |
| Cobitidae | Cobitis aurata | Cobitis bilineata |
| Cobitis elongata | Cobitis taenia | Coblenz |
| COBOL | Cobra (oklepnik) | Coburg |
| Coca Cola | Coca-Cola | Coca-cola |
| Coca-Cola (podjetje) | Cocamidopropyl betaine | Coccinella formosa |
| Coccinella livida | Coccinella obliterata | Coccinella obsoleta |
| Coccinella pallida | Coccinella quadripustulata | Coccinella septempunctata |
| Coccinella sexnotata | Coccinellidae | Coccoidea |
| Coccothraustes coccothraustes | Coccus | Coccus mali |
| Cochabamba | Cochabamba (razločitev) | Cochlearia armoracia |
| Cockcroft | Cockpit | Cockpit (album) |
| Cockpit (geografija) | Cockta | Cocktail |
| Cocktail (album) | Coco Chanel | Coco Crisp |
| Coco Dias ali Zlata vrata | Cocos | Cocos nucifera |
| Cocta | Coctail | CODAG |
| CODATA | Code civil | Code Red |
| Codelli | Codellijev most (novi) | Codelliji |
| Codex Alimentarius | Codex Amiatinus | Codex Cumanicus |
| Codex Ephraemi Rescriptus | Codex Eyckensis | Codex Iustinianus |
| Codex justinianus | Codex Manesse | Codex Regius |
| Codex Vaticanus | Codogno | Coelho Neto |
| Coeloglossum viride | Coenagrion hastulatum | Coenagrion mercuriale |
| Coenagrion ornatum | Coenagrion puella | Coenagrion scitulum |
| Coenonympha arcania | Coenonympha glycerion | Coenonympha oedippus |
| Coenraad Christiaan Hiebendaal | Coenraad Hiebendaal | Coenraad Jacob Temminck |
| Cof | Coface | Coffea |
| Coffea arabica | Coffee Shop Selection | Cogetinški potok |
| Cogetinci | Cogetinski potok | Coggia |
| Cogito ergo sum | Coglians | Cognac |
| Cognocoli-Monticchi | COinS | Cointreau |
| Coitus interruptus | Cojzit | Cojzla |
| Cojzov greben, Ljubljana | Cojzova cesta, Ljubljana | Cojzova koča na Kokrskem sedlu |
| Cojzova zvončnica | Coke | Cokla |
| Cokle | Coklovca | Cokoviće |
| Cokta | Cokuni | Col |
| Col du Galibier | Col du Grand Colombier | Col du Lautaret |
| Col du Petit Saint-Bernard | Col du Tourmalet | Col legno |
| Col pri Vipavi | Col San Martino | Col, Trst |
| Cola | Cola di Rienzo | Colón, Panama |
| Colônia do Sacramento | Colbert | Colchicum autumnale |
| Cold Lazarus (Zvezdna vrata SG-1) | Cold Spring Harbor | Cold Spring Harbor (album) |
| Coldplay | Cole | Cole in Dylan Sprouse |
| Cole in predsednik | Cole Moretti | Cole Porter |
| Cole Sprouse | Colegio Imperial de Madrid | Coleman Hawkins |
| Coleoptera | Coles Alexander Osborne | Colette Besson |
| Colias croceus | Colias edusa | Colibri |
| Coligny | Coligny (priimek) | Coliidae |
| Coliiformes | Colin A. Campbell | Colin Addison |
| Colin Alexander Campbell | Colin Arthur Jardine | Colin Bishop Callendar |
| Colin Bullard | Colin Chapman | Colin Charles Houghton Davis |
| Colin Davis | Colin Davis (driver) | Colin Edward Arrott Browning |
| Colin Firth | Colin Greenall | Colin Jackson |
| Colin McVean Gubbins | Colin Muir Barber | Colin Patterson |
| Colin Pitchfork | Colin Vyvyan O'Neil McNabb | Coline Mattel |
| Colisée de Chicoutimi | Colisée de Québec | Colisée Pepsi |
| Colisee pepsi | Colisee Pepsi | Colja |
| Coljava | Colladon | Collateralized debt obligation |
| Collatzeva domneva | Collège de France | Colle del Piccolo San Bernardo |
| Colleen Ballinger | Colleen Margaretta McCullough | Colleen McCullough |
| College | College de France | Collegio del Cambio |
| Collegium Carolinum Labacense | Collegium Maius | Collegium Novum |
| Collembola | Collen Edward Melville Richards | Colletes graeffei |
| Colletes hederae | Collignon | Collin Cowgill |
| Collinée | Collinder 39 | Collinee |
| Collingwood | Collingwood (priimek) | Collins |
| Collonges | Collonges, Ain | Collonges-la-Rouge |
| Collyer | Colmar | Colmar Freiherr von der Goltz |
| Colmar von der Goltz | Colmars | Colmars-les-Alpes |
| Colnari | Colnarji | Colo-Colo |
| Colobus guereza | Cologne | Cologne (razločitev) |
| Cologne, Gers | Colomban Cri-cri | Colombes |
| Colombia | Colombo | Colomerus vitis |
| Colomiers | Colon, Panama | Coloni |
| Colonia del Sacramento | Colonia do Sacramento | Colonia Iulia Aemona |
| Colonia, Urugvaj | Colonnello | Colony (album) |
| Colorado | Colorado Rockies | Colorado Springs |
| Colorado Springs, Kolorado | Coloratura | Colorno |
| Colosseo | Colosseum | Colossus |
| Colroy-la-Roche | Colson | Colt M-4 |
