All pages with prefix
- C++ Reference wiki
- C plus plus Standard Library Wiki
- CamelCase
- Camerapedia.org
- Carnalpedia
- Case Western Reserve University
- Catalan Wikipedia
- Categories
- Cathopedia (it)
- Chainki
- Chanarchive.pw
- Chaosfield
- Chaos~Religion
- Charles de Koninck
- Cheat Engine
- ChessWiki
- ChicagoCoop.net
- Chicago Wiki Arts
- ChildPorn.info
- ChildWiki
- ChiliWiki
- Christopedia
- Chronic Fatigue Syndrome
- Citizendium
- CivicActions
- CivilSocietyBlog
- ClayShirky
- Clc-wiki
- CleveWiki
- Clusterkopfschmerz: CK-Wissen
- CoSort
- Codehaus Wiki
- CoderWiki
- ColorWiki
- Comic Book Series Wiki
- ComingIn2006 Wiki
- Comixpedia
- Command and Conquer Wiki
- CommunityWiki
- Community Wiki (Rosemart.org)
- ComplaintWiki
- Confluence
- Conservapedia
- ConsumerWiki
- Consumerium
- Contraintes.net wiki
- CookbookWiki
- Crappypedia
- CreationWiki
- Crewscut.com
- Crónicas Pachecas Wiki
- Czech Wikipedia