Riverside Municipal Airport (Riverside Arlington Airport, decades ago) (IATA: RAL, ICAO: KRAL, FAA LID: RAL), is four miles (6 km) southwest of downtown Riverside, the county seat of Riverside County, California, United States.

Scheduled flights to Laughlin/Bullhead International Airport (Arizona) on Western Express Air ended when that airline ceased operations at the end of May 2007.

Runway 9/27 was paved about 1956 and Bonanza Air Lines appeared soon after; until 1969 it and successor Air West flew DC-3s and Fairchild F-27s to LAX, Las Vegas, Palm Springs and beyond. Golden West Airlines served Riverside in the 1970s with nonstop and direct de Havilland Canada DHC-6 Twin Otters to LAX.

Riverside Municipal Airport has been home to Civil Air Patrol Squadron 5 since 2005.

In 2013, FedEx Express, a cargo airline, donated a Boeing 727-200F to California Baptist University for its new aviation science program. The aircraft is on permanent display at the airport and provides a working laboratory for aviation science students. The aircraft, N266FE (cn 21672/1538), is a Boeing 727-233/Adv(F).