Milwaukee Mitchell International Airport (IATA: MKE, ICAO: KMKE, FAA LID: MKE) is a civil–military airport 5 nautical miles (9.3 km; 5.8 mi) south of downtown Milwaukee, Wisconsin, United States. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2023–2027, in which it is categorized as a medium-hub primary commercial service facility. Milwaukee Mitchell International Airport covers 2,180 acres (880 ha) and has five asphalt and concrete runways.

The airport is named in honor of United States Army General Billy Mitchell, who was raised in Milwaukee and is often regarded as the father of the United States Air Force. Along with being the primary airport for Milwaukee, Mitchell International is also used by travelers throughout Southern and Eastern Wisconsin and Northern Illinois. Since March 1941, the airport's weather station has been used as the official point for Milwaukee weather observations and records by the National Weather Service, whose area office is located in Sullivan.