Grant County International Airport (IATA: MWH, ICAO: KMWH, FAA LID: MWH) is a public use airport located six miles (10 km) northwest of the central business district of Moses Lake in Grant County, Washington, United States. Formerly a military facility, the airport is owned by the Port of Moses Lake, and its 13,500-foot (4,110 m) runway is the 17th longest in the U.S.

According to Federal Aviation Administration records, the airport had 1,369 passenger boardings (enplanements) in calendar year 2008, 2,920 enplanements in 2009, and 1,442 in 2010. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a general aviation airport.