| 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 | Colt M1861 Navy | Colt Model 1861 Navy |
| Colt Model 1873 | Colt Paterson | Colt Peacemaker |
