Arlington Municipal Airport (ICAO: KAWO, FAA LID: AWO) is a public airport located three miles (5 km) southwest of the central business district of Arlington, a city in Snohomish County, Washington, United States. It is owned and operated by the City of Arlington.

Many U.S. airports use the same three-letter location identifier for the FAA and IATA. However, this airport is assigned AWO by the FAA but has no designation from the IATA.

It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a regional general aviation facility.