| Cathy Freeman | Cathy Freeman |
| Catilina | Lucius Sergius Catilina |
| Cato | Cato |
| Cato den äldre | Marcus Porcius Cato der Ältere |
| Cato Institute | Cato Institute |
| Catoosa County | Catoosa County |
| Catopuma | Goldkatze |
| Catrin Nilsmark | Catrin Maria Nilsmark |
| Catrine | Katharina |
| Cats | Cats |
| Cattaraugus County | Cattaraugus County |
| Catullus | Catull |
| catwalk | Laufsteg |
| Catwoman | Catwoman |
| Cauca | Cauca |
| Caucafloden | Río Cauca |
| Cauchy-följd | Cauchy-Folge |
| Cauchy-Schwarz olikhet | Cauchy-Schwarzsche Ungleichung |
| Cauchys integralsats | Cauchyscher Integralsatz |
| Cauco | Cauco |
| causa | Causa |
| Cava | Cava |
| Cavagnago | Cavagnago TI |
| Cavaillon | Cavaillon |
| Cavalier king Charles spaniel | Cavalier King Charles Spaniel |
| Cavan | County Cavan |
| cavatina | Kavatine |
| Cavern Club | Cavern Club |
| Cavia | Echte Meerschweinchen |
| Caviano | Caviano TI |
| Cavigliano | Cavigliano TI |
| Cavour | Cavour |
| Cayenne | Cayenne |
| Caymanöarna | Kaimaninseln |
| Caymanöarnas fotbollslandslag | Fußballnationalmannschaft der Kaimaninseln |
| Caymanöarnas statsvapen | Wappen der Kaimaninseln |
| Cayo Ernesto Thaelmann | Ernst-Thälmann-Insel |
| Cayuga County | Cayuga County |
| Cazin | Cazin |
| Cazis | Cazis |
| CBC | Cipher Block Chaining Mode |
| CBD | Biodiversitäts-Konvention |
| CBGB | CBGB |
| CBS | Columbia Broadcasting System |
| CC | CC |
| CCIR | CCIR |
| CCITT | Comité Consultatif International Téléphonique et Télégraphique |
| CCS | CCS |
| CcTLD | Top-Level-Domain |
| CD | CD |
| CD Aves | CD Aves |
| CD Castellón | CD Castellón |
| CD Nacional | Clube Desportivo Nacional |
| CD Numancia | CD Numancia |
| CD Tenerife | CD Teneriffa |
| CD Veracruz | CD Veracruz |
