Chippewa County International Airport (IATA: CIU, ICAO: KCIU, FAA LID: CIU) is a public use airport in Chippewa County, Michigan, United States. It is located 15 nautical miles (17 mi, 28 km) south of the central business district of Sault Ste. Marie, Michigan. The airport is owned by the Chippewa County Economic Development Corporation.