Marion Municipal Airport (IATA: MZZ, ICAO: KMZZ, FAA LID: MZZ) is located three miles southwest of Marion, in Grant County, Indiana. The FAA's National Plan of Integrated Airport Systems for 2021–2025 categorized it as a general aviation facility.

The airport saw commercial airline service by Lake Central Airlines using Douglas DC-3s beginning in 1956. Lake Central merged into Allegheny Airlines in 1968 using Aerospatiale N 262s before service was discontinued in 1970. The airport was then served by small commuter airlines during the 1970s.