| COVID-19 v Sloveniji | Cowan | Cowboy Style |
| Coworking | Cowperjeva žleza | COX |
| Cox | Coxa | Coxae |
| Coxeter-Dinkinov diagram | Coxeter-Dynkinov diagram | Coxeter–Dynkinov diagram |
| Coxeterjev element | Coxeterjeva grupa | Coxeterjeva matrika |
| Coxeterjeva notacija | Coxeterjevo število | Coxiella burnetii |
| Coxsone Dodd | Coyhaique | Cozes |
| Cozzano | CP | CPD−24° 6723 |
| CPD−52° 7028 | CPE | CPLP |
| CPR-1000 | CPU | CPUPI |
| CPV | CQB | Cr |
| CR | Crabbe in Goyle | Crac de Chevaliers |
| Crack | Cradle of Filth | Crago vulgaris |
| Craig Bellamy | Craig Breslow | Craig Conroy |
| Craig Douglas Bellamy | Craig Harrison (ostrostrelec) | Craig Mazin |
| Craig Parnham | Craig Steadman | Craig Thompson |
| Cramerjevo pravilo | Cranberries | Cranberry Saw Us |
| Crangon crangon | Crangon maculatus | Crangon maculosa |
| Crangon rubropunctatus | Crangon vulgaris | Craniata |
| Cranopsis periglenes | Craonne | Craponne-sur-Arzon |
| Crassulaceae | Crastatt | Crataegus |
| Crataegus elegans | Crataegus laevigata | Crataegus monogyna |
| Crataegus nigra | Crataegus oxyacantha | Crataegus pyracantha |
| Cravero | Cravero (Kravar) | Crawford |
| Crawford Long | Crawford W. Long | Crawford Williamson Long |
| Crazier (pesem, Taylor Swift) | Crazy Horse | Crčevo |
| Crème brûlée | Crécy | Crécy-sur-Serre |
| Crémieu | Créon | Créon-d'Armagnac |
| Créteil | CRC | Crcavac |
| Creative Commons | CreativeCommons | Crecy |
| Crecy-sur-Serre | Credo | Credo, quia absurdum est |
| Cree Inc. | Creed | Creedence Clearwater Revival |
| Creighton Abrams | Creighton Abrams Jr. | Creighton Abrams mlajši |
| Creighton W. Abrams | Creighton W. Abrams Jr. | Creighton W. Abrams mlajši |
| Creighton Williams Abrams Jr. | Creighton Williams Abrams Junior | Creighton Williams Abrams mlajši |
| Creil | Creina | Creme brulee |
| Cremieu | Cremona | Cremona (pokrajina) |
| Cremušina | Creon | Creon-d'Armagnac |
| Crepaja | Cres | Cres (mesto) |
| Cres (otok) | Cres (razločitev) | Cres, Cres |
| Crescendo | Crescentia cujete | Crescenzio Sepe |
| Crest | Crestor | Cret |
| Cret (razločitev) | Cret Bizovački | Cret Viljevski |
| Crete Senesi | Creteil | Creully |
| Creuse | Creuse (departma) | Creuse (reka) |
| Creutzfeld-Jakobova bolezen | Creutzfeldt-Jakobova bolezen | Crevan |
| Crevarska Strana | Crex crex | CRH |
| CRH380A | Crhalj | Crişul Alb |
| Crişul Negru | Cricetinae | Cricetus cricetus |
| Crișul Alb | Crișul Negru | Crișul Repede |
| Crikvenica | Crikvenica - klimatsko zdravilišče | Crimen sollicitationis |
| Crimes and Misdemeanors | Crimes of the Heart | Crinoidea |
| Crisanto Luque Sánchez | Crispin Glover | Crispin Hellion Glover |
| CRISPR | CRISPR-Cas | CRISPR-Cas9 |
| CRISPR/Cas | CRISPR/Cas9 | Cristache Gheorghiu |
| Cristache Gherorghiu | Cristóbal Diatristán de Acuña | Cristeana Cojocaru |
| Cristeana Matei | Cristian Chivu | Cristian Eugen Chivu |
| Cristian Gaţu | Cristian Gațu | Cristian Gonzalez |
| Cristian González | Cristian Mandeal | Cristian Pavón |
| Cristiano da Matta | Cristiano Da Matta | Cristiano Monteiro da Matta |
| Cristiano Ronaldo | Cristieana Cojocaru | Cristieana Cojocaru-Matei |
| Cristina Casandra | Cristina Elisabet Fernández | Cristina Fernandez de Kirchner |
| Cristina Fernández de Kirchner | Cristina Iloc | Cristina Iloc-Casandra |
| Cristina Tisot | Cristinacce | Cristofano Malvezzi |
| Cristoforo Giacobazzi | Crisul Alb | Crisul Negru |
| Critérium du Dauphiné | Critérium du Dauphiné Libéré | Critchfield |
| Criterium du Dauphine | Criterium du Dauphine Libere | Crithagra miliaria |
| Crivac | CRJ | CRJ100 |
| CRJ200 | Crklada | Crklica |
| Crklje | Crkovec | Crkovnica |
| Crkvari | Crkvenac | Crkveni Bok |
| Crkveni Toci | Crkveni Vrhovci | Crkvenik |
| Crkvičko Polje | Crkvica (otok) | Crkvice |
| Crkvice, Srbija | Crkvina (otok) | Crkvina, Kruševac |
| Crkvine | Crkvine (razločitev) | Crkvine, Črna gora |
| Crkvine, Mladenovac | Crkvine, Tutin | Crljenac |
| Crljenci | Crljenice | Crljenik |
| Crm | CRM | Crmnica |
| Crmnica (razločitev) | Crmnica (reka) | Crna Bara |
| Crna Bara (razločitev) | Crna Bara, Aleksinac | Crna Bara, Čoka |
| Crna Bara, Bogatić | Crna Bara, Vlasotince | Crna Draga |
| Crna Glava | Crna Gora | Crna Klada |
| Crna mačka, beli mačor | Crna Mlaka | Crna Reka, Trgovište |
| Crna Trava | Crnac | Crnac (razločitev) |
| Crnac, Sisak | Crnac, Sisek | Crnajka |
| Crnatovo | Crnča | Crnča (razločitev) |
| Crnča, Črna gora | Crnča, Srbija | Crnče |
| Crnče (razločitev) | Crnče, Bela Palanka | Crnče, Jagodina |
| Crnci | Crngrob | Crni |
| Crni (Dobrinj) | Crni Dabar | Crni Kal |
| Crni Kao | Crni Kao (razločitev) | Crni Kao, Batočina |
| Crni Kao, Ražanj | Crni Lazi | Crni Lug |
| Crni Lug (razločitev) | Crni Lug, Hrvaška | Crni Lug, Srbija |
| Crni Potok | Crni Potok (razločitev) | Crni Potok, Podcrkavlje |
| Crni Potok, Topusko | Crni Vrh | Crni Vrh (razločitev) |
| Crni Vrh, Berane | Crni Vrh, Knjaževac | Crni Vrh, Medveđa |
| Crni Vrh, Pljevlja | Crni Vrh, Vranje | Crniš |
| Crnići | Crnići (razločitev) | Crnjelovo Donje |
| Crnjelovo Gornje | Crnkovič | Crno |
| Crno (razločitev) | Crno bijeli svijet | Crno bijeli svijet (singl) |
