| Cláudio Hummes | Cláudio Hummes |
| Cláudio Taffarel | Cláudio Taffarel |
| Clémence Poésy | Clémence Poésy |
| Clément Janequin | Clément Janequin |
| Clément Marot | Clément Marot |
| Cléty | Cléty |
| CMAS | Confédération Mondiale des Activités Subaquatiques |
| cmentarny | cemetery |
| cmentarz | cemetery |
| Cmentarz Bernardyński na Zarzeczu | Bernardine Cemetery |
| Cmentarz Centralny w Wiedniu | Zentralfriedhof |
| Cmentarz dla zwierząt | Pet cemetery |
| Cmentarz La Chacarita | La Chacarita Cemetery |
| Cmentarz Montmartre | Montmartre Cemetery |
| Cmentarz Montparnasse | Montparnasse Cemetery |
| Cmentarz na Rossie | Rasos Cemetery |
| Cmentarz Nowodziewiczy | Novodevichy Cemetery |
| Cmentarz Orląt | Cemetery of the Defenders of Lwów |
| Cmentarz Passy | Passy Cemetery |
| Cmentarz Piskariowski w Sankt Petersburgu | Piskaryovskoye Memorial Cemetery |
| Cmentarz Powązkowski | Powązki Cemetery |
| Cmentarz Père-Lachaise | Père Lachaise Cemetery |
| Cmentarz Rakowicki | Rakowicki Cemetery |
| Cmentarz Wagańkowski | Vagankovo Cemetery |
| Cmentarz Łyczakowski we Lwowie | Lychakivskiy Cemetery |
| Cmentarz żydowski w Berlinie-Weißensee | Weißensee Cemetery |
| Cmentarz żydowski w Warszawie | Okopowa Street Jewish Cemetery |
| cmentarzysko | cemetery |
| CML | Chemical Markup Language |
| CMM | Capability Maturity Model |
| CMMS | Computerized Maintenance Management System |
| cmokier | sycophant |
| CMOS | CMOS |
| CMS | Compact Muon Solenoid |
| CMYK | CMYK color model |
| CN Tower | CN Tower |
| Cna | Tsna |
| CNC | CNC |
| CNG | Compressed natural gas |
| CNN | CNN |
| cnota | chastity |
| cnoty kardynalne | cardinal virtues |
| co | that |
| co ci chodzi po głowie | what's on your mind |
| co do joty | to a T |
| co dwie głowy, to nie jedna | two heads are better than one |
| co jest kurwa_ | what the fuck |
| co ma piernik do wiatraka | what does that have to do with the price of tea in China |
| co nagle, to po diable | haste makes waste |
| co najmniej | at least |
| co oznacza XX_ | what does XX mean |
| co Pan robi_ | what are you doing |
| co Pani robi_ | what are you doing |
| co robisz_ | what are you doing |
| Co się wydarzyło w Madison County | The Bridges of Madison County |
| co słychać_ | how are you |
| co to jest_ | what is that |
| co tydzień | weekly |
| co z siebie dajesz, to do ciebie wraca | what goes around comes around |
| co! | what |
| Coahuila | Coahuila |
