Killeen Regional Airport (IATA: GRK, ICAO: KGRK, FAA LID: GRK) is a small military/commercial joint-use airport that operates alongside Robert Gray Army Airfield. The airport is based inside the south end of the Fort Cavazos Military Reservation (known as West Fort Hood), six nautical miles (7 mi, 11 km) southwest of the central business district of Killeen, Texas, in unincorporated Bell County. The commercial side replaced the old Killeen Municipal Airport (now Skylark Field) in August, 2004 as that airport was unable to expand. Formerly Killeen–Fort Hood Regional Airport, on 26 September, 2023, the airport began the multi-month process of renaming to "Killeen Regional Airport", as approved by the Killeen City Council.

As per Federal Aviation Administration records, the airport had 232,299 passenger boardings (enplanements) in calendar year 2008, 231,500 enplanements in 2009, and 243,861 in 2010. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a primary commercial service airport (more than 10,000 enplanements per year).