Fort Smith Regional Airport (IATA: FSM, ICAO: KFSM, FAA LID: FSM) is a public use airport located near the Interstate 540 freeway three nautical miles (6 km) southeast of the central business district of Fort Smith, in Sebastian County, Arkansas, United States. FSM is governed by the Fort Smith Airport Commission as established by the City of Fort Smith, Arkansas. It serves the transportation needs of residents and businesses of western Arkansas and eastern Oklahoma. FSM is currently served by American Eagle, the regional airline affiliate of American Airlines. It has a large population of corporate and general aviation aircraft. A full-service fixed-base operator (FBO), Signature Flight Support, provides service to general aviation, airline, and military operators.

The airport is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a primary commercial service airport (more than 10,000 enplanements per year). In 2013, the airport had 82,742 passenger boardings (enplanements).

Since 1953, FSM has also been the home to Fort Smith Air National Guard Station and the Arkansas Air National Guard's 188th Wing (188 WG). Formerly a fighter wing that previously operated F-4 Phantom II, F-16 Fighting Falcon, and A-10 Thunderbolt II aircraft, the 188th Wing currently features three primary mission sets: Remotely Piloted Aircraft (MQ-9 Reaper); ISR (Distributed Ground Station-Arkansas); and Targeting (Space-Focused).