SKA may refer to:

• Acharnes Railway Center (SKA), a railway junction in Athens, Greece
• Armed Forces Office (Germany) or Joint Support Office, Streitkräfteamt in German, an agency of the German Armed Forces
• Republic of Korea Army, also known as the South Korean Army (SKA)
• Shotokan Karate of America
• Ska, a style of music
• Ska (leafhopper), a leafhopper genus in the tribe Erythroneurini
• SKA Brewing, a microbrewery in Durango, Colorado, United States
• Skagen (The Skaw), a town in Denmark
• Ska-P, a Spanish ska punk band
• Square Kilometre Array, a radio telescope under design
• Sachkhoj Academy, an Indian religious academy of Nihang Singhs.

Ska (, Jamaican ) is a music genre that originated in Jamaica in the late 1950s and was the precursor to rocksteady and reggae. Ska combined elements of Caribbean mento and calypso with American jazz and rhythm and blues. It is characterized by a walking bass line accented with rhythms on the upbeat. Ska developed in Jamaica in the 1960s when Prince Buster, Clement "Coxsone" Dodd, and Duke Reid formed sound systems to play American rhythm & blues and then began recording their own songs. In the early 1960s, ska was the dominant music genre of Jamaica and was popular with British mods. Later it became popular with many skinheads.