Okayama Airport (岡山空港, Okayama Kūkō) (IATA: OKJ, ICAO: RJOB) is an airport in Okayama Prefecture, Japan. It is also known as Okayama Momotaro Airport.

It is located 18 km (11 mi) northwest of central Okayama City and 11.5 km (7.1 mi) northwest or 30 minutes by bus from Okayama Station. It is about 10 minutes from the Okayama interchange, Sanyo Expressway.

Okayama Momotaro Airport has three domestic routes (to Tokyo, Sapporo, and Okinawa) and four international routes (to Seoul, Shanghai, Hong Kong, and Taipei).