The Cobb County Airport at McCollum Field is a municipal airport located immediately south of Kennesaw, Georgia, in the United States. It is owned and operated by the county government of Cobb County, in the northwestern part of metro Atlanta. Its IATA airport code is RYY, its ICAO airport code is KRYY. It is also a weather station, but does not report from midnight to 6:00 in the morning.