| C/1973 E1 (Kohoutek) | C/1974 V2 | C/1978 R3 |
| C/1985 K1 | C/1988 P1 | C/1992 N1 |
| C/1994 T1 | C/2001 Q4 (NEAT) | C/2012 S1 (ISON) |
| C/2019 Y4 (ATLAS) | C/2020 F3 (NEOWISE) | C/2022 E3 (ZTF) |
| C/D | C11-15-iso-Alkan | C6H3N3O7 |
| C6H8O6 | C9H13NO3 | Ca |
| CA | CA Osasuna | Ca' d'Oro |
| Ca' Foscari | CA-12 | Caño Cristales |
| Cabala | Cabaret Voltaire | Cabell Breckinridge |
| Cabera exanthemata | Cabernet franc | Cabernet sauvignon |
| Cabernet Sauvignon | Cabernet-sauvignion | Caberto Conelli |
| Cabildo de Buenos Aires | Cabildo de Salta | Cabildo v Buenos Airesu |
| Cabildo, Buenos Aires | Cabirijine noči | Cable News Network |
| Cabo da Roca | Cabo Verde | Cabourg |
| Cabrera | Cabuna | CAC |
| CAC 40 | CAC Sabre | CAC-12 |
| CAC/PAC JF-17 Thunder | Cacajao | Cacatua galerita |
| Cacatua galerita galerita | Cacatua moluccensis | Cacatuidae |
| Cacatuinae | Cacau | Cacık |
| Caccia | Cachan | Caché (film) |
| Cache (film) | Cachen | Cachoeira do Sul |
| Cacia | Caciki | Cacio e pepe |
| Caciocavallo | Cacopsylla pyrisuga | Cactaceae |
| Cactoblastis cactorum | CAD | Cadetova tekočina |
| Cadillac | Cadillac, Gironde | Cadiz |
| Cadours | Cadwell 46 | Caeleb Dressel |
| Caelifera | Caen | Caenorhabditis elegans |
| Caerdydd | Caere | Caerleon |
| Caernarfon | Caerostris | CAES |
| Caesar | Caesar de Choiseul | Caesar, duc de Choiseul |
| Caesars Palace Grand Prix Circuit | CAF | Caf |
| Café Filho | Café Society (film) | Cafe Filho |
| Cafesijanov muzej umetnosti | Caffarelli | Caffè espresso |
| Cafova ulica, Maribor | Cafu | Cafuta |
| Cage | Cage (razločitev) | Cage, Hrvaška |
| CAGI | Caginec | Cagiva |
| Cagliari | Cagliari (pokrajina) | Cagliari Calcio |
| Cagn | Cagnano | Cagnes-sur-Mer |
| Cagnotte | Cahal | Cahal Brandan Daly |
| Cahal Daly | Caharija Delfin | Cahe |
| Cahen | Cahenova konstanta | Cahit Arf |
| CAHL | CAHL (razločitev) | Cahokia |
| Cahors | Cahurščina | Cahurski jezik |
| CAIC Z-10 | Cain | Cainkar |
| Caipirinha | Cairn terier | Cairo |
| Caisleán an Rois | Caisra | Caissa |
| Caitlyn Jenner | Caitlyn Marie Jenner | Caius Gabriel Cibber |
| Cajalova celica | Cajetan Franz Alexander Graf von Attems-Heiligenkreuz | Cajetan Franz Alexander von Attems-Heiligenkreuz |
| Cajhen | Cajnarje | Cajnkar |
| Cajnko | Cakanovac | Cakóház |
| Cakóháza | Cal Niday | Calabijev trikotnik |
| Calabria | Calacuccia | Calais |
| Calakmul | Calama | Calaquendiji |
| Calcalong Creek (meteorit) | Calcaneus | Calcatoggio |
| Calcutta | Caldairou | Calder Memorial Trophy |
| Calder Trophy | Calderon de la Barca | Caldwell 20 |
| Caldwell 23 | Caldwell 46 | Caldwell 49 |
| Caldwell 99 | Cale Nuske | Caleb Bragg |
| Calenardhon | Calendula officinalis | Calenzana |
| Calera, Alabama | Calgary | Calgary, Alberta |
| Cali | Calidris temminckii | California |
| California (glasbena skupina) | California Institute of Technology | California News Publishers Association |
| Californication | Californija | Calimero |
| Calixte-Louis-François-Joseph Roussel | Calixte-Marie-Paul d'Aurelle de Montmorin de Saint-Hérem | Call It Love |
| Call of Cthulhu: Dark Corners of the Earth | Call of duty | Call of Duty (videoigra) |
| Call of Duty 2 | Call of duty2 | Call of Duty: World at War |
| Call of Juarez | Calla palustris | Callac |
| Callaghan | Calle Johansson | Callen |
| Callidium violaceum | Callimorpha hera | Callimorpha quadripunctaria |
| Calling Time | Calliphora insidiosa | Calliphora monspeliaca |
| Calliphora musca | Calliphora nana | Calliphora rufifacies |
| Calliphora spitzbergensis | Calliphora vicina | Calliphora vomitoria |
| Callista chione | Callopeltis leopardinus | Callophrys rubi |
| Callum Hudson-Odoi | Calmato | Calmo |
| Calopteryx splendens | Calopteryx virgo | Calosoma auropunctatum |
| Calosoma inquisitor | Calosoma sycophanta | Calospilos sylvata |
| Caltabellottski sporazum | Caltanissetta | Caltanissetta (pokrajina) |
| Caltech | Caluire-et-Cuire | Calvados |
| Calvados (departma) | Calvados (pijača) | Calvi |
| Calvi (razločitev) | Calvin | Calvin (stripovski junak) |
| Calvin Coolidge | Calvin Harris | Calvin in Hobbes |
| Calycanthus | Calypso - Grška boginja | CAM |
| CAM (biologija) | Cam Gigandet | CAM ladja |
| Camaïeu | Camaieu | Camaje |
| Camara Jones | Camarès | Camares |
| Camargo | Camargue | Cambia |
| Cambodunum | Cambrai | Cambrajska liga |
| Cambremer | Cambridge | Cambridge (razločitev) |
| Cambridge, Massachusetts | Cambridge, Ontario | Cambrijsko hribovje |
| Camelidae | Camellia japonica | Camellia sinensis |
| Camelopardalis | Camelus | Camelus bactrianus |
| Camelus dromedarius | Camembert | Cameo |
| Camera degli Sposi | Camera obscura | Camera obscura (razločitev) |
| Camera obscura (roman) | Cameraria ohridella | Camerata Labacensis |
| Camerata labacensis | Camerlengo | Cameron |
| Cameron Baerg | Cameron Bright | Cameron Diaz |
| Cameron Gordon Graham Nicholson | Cameron MacDonald Nicol | Cameron Mavdonald Nicol |
| Cameron McDonald Nicol | Cameroon | Camilie-Léon Duffet |
| Camilla Brunelli | Camilla in Rebecca Rosso | Camilla Nilsson |
| Camilla, kraljica žena | Camilla, Kraljica Združenega Kraljevstva | Camille Adalbert Marie Clément de La Roncière-Le Noury |
