Clintonville Municipal Airport (IATA: CLI, ICAO: KCLI, FAA LID: CLI) is located two miles southeast of Clintonville, in Waupaca County, Wisconsin, United States. The Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2025–2029 categorized it as a basic general aviation facility.

The airport was the birthplace of Wisconsin Central Airlines, which became North Central Airlines. It had scheduled flights to Clintonville from 1948 until 1966.