Rhinelander–Oneida County Airport (IATA: RHI, ICAO: KRHI, FAA LID: RHI) is a public use airport located 2 nautical miles (3.7 km; 2.3 mi) southwest of the central business district of Rhinelander, a city in Oneida County, Wisconsin, United States. The airport is owned by the city and county. It is primarily used for general aviation and is also served by two commercial airlines.

It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2025–2029, in which it is categorized as a non-hub primary commercial service facility. It is the seventh busiest of the eight commercial airports in Wisconsin in terms of passengers served, and the only one to not have air traffic control services on field.