CCK may refer to:
Organisations Chama Cha Kijamii, a political party in Tanzania Néstor Kirchner Cultural Centre (Spanish: Centro Cultural Kirchner), an institution in Argentina Cambridge Community Kitchen, a free meal organisation in Cambridge, UK
Government agencies Communications Commission of Kenya Constitutional Court of Korea, a constitutional court in South Korea
Places Ching Chuan Kang Air Base, Taiwan Choa Chu Kang, Singapore Choa Chu Kang MRT/LRT station, Singapore (station abbreviation) Cocos (Keeling) Islands (ISO 3166-1 country code) Cocos (Keeling) Islands Airport (IATA code)
Science and technology Cholecystokinin, a digestive hormone
Computing Complementary code keying, a modulation technique used in IEEE 802.11b Composite candidate key, a candidate key comprising more than one field Client Customization Kit, a set of tools to aid in distributing customized Mozilla clients, see list of Mozilla products
People Chiang Ching-kuo (1910–1988), Taiwanese president Chris Kanyon (1970–2010), American wrestler
Other uses Candy Coated Killahz a Canadian hip-hop/electronic music group CCK, an English professional wrestling tag team consisting of Chris Brookes and Kid Lykos