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

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