Kagoshima Airport (鹿児島空港, Kagoshima Kūkō) (IATA: KOJ, ICAO: RJFK) is an international airport located in Kirishima, Kagoshima Prefecture, Japan, 29.6 km (18.4 mi) northeast of Kagoshima-Chūō Station in Kagoshima City. It is the second-busiest airport in Kyushu after Fukuoka Airport, serving 6.1 million passengers in 2018.

The airport covers 187.7 hectares (464 acres) and has one 3000m runway.

Japan Air Commuter, a regional affiliate of Japan Airlines, and New Japan Aviation have their headquarters at the airport.

Kagoshima Airport serves as the gateway to the Satsunan Islands in Kagoshima Prefecture. As a result, the route between Tokyo Haneda Airport and Kagoshima Airport is the fifth busiest route in Japan. It was ranked seventh in the world in Skytrax’s World's Best Domestic Airports 2024.