| 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 | Camille d'Hostun, duc de Tallard | Camille Flammarion |
| Camille Guillaume Bigourdan | Camille Jenatzy | Camille Jordan |
