Lenawee County Airport (IATA: ADG, ICAO: KADG, FAA LID: ADG) is a county-owned public-use airport located three miles (5 km) southwest of the central business district of Adrian, a city in Lenawee County, Michigan, United States. The airport is accessible by road from Cadmus Road, and is close to US-223. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a local general aviation facility.