| 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 | Colt SAA | Colt Single Action Army |
| Colton Yellow Horn | Coluber gemonensis | Coluber leopardinus |
| Coluber najadum | Coluber situla | Coluber viridiflavus |
| Colubridae | Coluccio Salutati | Colum McCann |
| Columba livia | Columba livia domestica | Columba oenas |
