K55

K55 or K-55 may refer to:

K-55 (Kansas highway) K-55 (missile), a Soviet air-to-air missile K55 howitzer, a South Korean self-propelled gun , a corvette of the Royal Navy Keystone K-55 Pronto, an American biplane Osan Air Base, in South Korea Potassium-55, an isotope of potassium , various vessels K-55, a Billiard table profile