Atlantic Municipal Airport (IATA: AIO, ICAO: KAIO, FAA LID: AIO), is a city-owned public-use airport located two miles (3 km) west of the central business district of Atlantic, a city in Cass County, Iowa, United States.

It is included in the National Plan of Integrated Airport Systems for 2017–2021, which categorized it as a local general aviation facility.

[3] Atlantic Municipal Airport covers an area of 127 acres (51 ha) at an elevation of 1,165 feet (355 m) above mean sea level.

It has two runways: 2/20 is 5,000 by 75 feet (1,524 x 23 m) with a concrete surface and approved precision instrument approaches.

[1] For the 12-month period ending August 3, 2016, the airport had 8,050 aircraft operations, an average of 22 per day: all general aviation.