Lancaster Municipal Airport (FAA LID: 73C) is a city owned public use airport located four nautical miles (5 mi, 7 km) south of the central business district of Lancaster, a city in Grant County, Wisconsin, United States.

[1] It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2025–2029, in which it is categorized as an unclassified general aviation facility.

[2] Lancaster Municipal Airport covers an area of 27 acres (11 ha) at an elevation of 1,016 feet (310 m) above mean sea level.

[1] For the 12-month period ending May 22, 2024, the airport had 8,400 general aviation aircraft operations, an average of 23 per day.

In July 2024, there were 8 aircraft based at this airport: 6 single-engine, 1 helicopter and 1 glider.