KX and variants may refer to:

Businesses and brands Pentax KX, a 35mm film SLR camera model Pentax K-x, a digital SLR camera model Cayman Airways (IATA code KX) KX Television, a network of four CBS affiliates under flagship KXMC-TV Kx Systems, a software company focused on real-time analytics KX 91.5. Philippines, a brand name for DXKX

Other uses Family Kx, a large group of the New Testament manuscripts Kings Cross railway station, London ⟨k͡x⟩, symbol for the voiceless velar affricate in the International Phonetic Alphabet

See also 9945 Karinaxavier or 1990 KX, an asteroid