Category:Wikipedia references cleanup
- Cadmium chloride
- Cadmium iodide
- Cadmium telluride
- Caffeic acid
- Camphoric acid
- Canadian identity
- James Cannon (mathematician)
- Cantheism
- Canyonlands National Park
- Capputeano
- Captain Marvel (Marvel Comics)
- Caramac
- Carbonate hosted lead zinc ore deposits
- Catalase
- Catalina Magnet High School
- Cataract
- Catenaccio
- Celebrity sex tape
- Cellular router
- Censorship by Google
- Cerium(III) chloride
- Cervical cancer
- Kesarin Chaichalermpol
- Changanassery
- Characters of Chrono Trigger
- Charu Nivedita
- Henry George Chauvel
- Chicago Engineering Design Team
- Child safety lock
- The China Study
- Chitto Jetha Bhayshunyo
- Chloric acid
- Chlorosulfuric acid
- Chonyi
- Christmas truce
- Chromium(III) chloride
- Chromium(III) oxide
- Chāquán
- Cicutoxin
- Cinderella Effect
- Citizens for Responsibility and Ethics in Washington
- Citizens' Health Care Working Group
- Civil liberties
- Clairol (chemical)
- Clifton, Massachusetts
- Cloth filter
- Cloud computing
- Cocoa Touch
- Cognitive dissonance
- Collectivization in the Ukrainian SSR
- Colloid
- Claudette Colvin
- Communications in Barbados
- Community marketing
- Composite pattern
- Condominium
- Confederated Tribes of Siletz
- Confederates in the Attic
- Angelo Felice Coniglio
- Contactee
- Controversies surrounding Royal Dutch Shell
- Convolutindole A
- Helen Cooper (Canadian politician)
- Copaene
- Copepod
- Cordycepin
- Core-Plus Mathematics Project