YKK is a Japanese manufacturing group founded in 1934.

YKK may also refer to: Union of Communists of Kurdistan (), Turkey (1986–1990s) Yokohama Kaidashi Kikou, a sci-fi manga series by Hitoshi Ashinano (1994–2006) Kitkatla Water Aerodrome, British Columbia, Canada (IATA:YKK) "YKK", a song by Fluke from the album Puppy