Oakwood is a city in Montgomery County, Ohio, United States. The population was 9,572 at the 2020 census. A suburb of Dayton, Oakwood is part of the Dayton metropolitan area. It was incorporated in 1908. John Henry Patterson, industrialist and founder of the National Cash Register Corporation, is considered the "Father of Oakwood." Oakwood is completely land-locked by the surrounding municipalities of Dayton and Kettering.