Ck1

Ck1 or CK1  may refer to:


 * Transportation
 * AIDC F-CK-1 Ching-kuo, the Taiwanese fighter jet
 * the F-16 variant, see F-16 Fighting Falcon variants
 * Chang Kong CK-1, the radio-controlled target drone
 * Cicaré CK.1, the Argentine helicopter
 * the locomotive, see CK class


 * Biochemistry
 * Keratin 1
 * the cytokeratin, see Type II keratin
 * Casein kinase 1, a family of protein kinases


 * Asteroids
 * 1994 CK1, see 10146 Mukaitadashi
 * 1993 CK1, see 20043 Ellenmacarthur
 * 1989 CK1, see 4836 Medon
 * 1986 CK1, see 3951 Zichichi
 * 1983 CK1, see 4198 Panthera


 * Other
 * Crusader Kings I, a grand strategy computer game by Paradox Interactive
 * the illicit drug cocktail, see cocaine and ketamine
 * the Calvin Klein product, see Calvin Klein (company)
 * Pentecost biogeographic region, see Interim Biogeographic Regionalisation for Australia