United States of America
- Dayton, a city in the County of Marengo, Alabama
- Dayton, a city in Franklin County, Idaho
- Dayton, city of Tippecanoe County, Indiana
- Dayton, a city in Webster County, Iowa
- Dayton, town in Campbell County, Kentucky
- Dayton, a city in the County of York, Maine
- Dayton, Newaygo County township, Michigan
- Dayton, a township in Tuscola County, Michigan
- Dayton, a city in Hennepin County, Minnesota
- Dayton, census-designated place in Lake County, Montana
- Dayton, census-designated place in the County of Lyon, Nevada
- Dayton, census-designated place in Middlesex County, New Jersey
- Dayton, city of Cattaraugus County, New York
- Dayton, a town in Yamhill County, Oregon
- Dayton, county seat of Montgomery County, Ohio
- Dayton, borough Armstrong County, Pennsylvania
- Dayton, county seat of Rhea County, Tennessee
- Dayton, a city in Liberty County, Texas
- Dayton, a town in Rockingham County, Virginia
- Dayton, the county seat of Columbia County, Washington
- Dayton, town in Richland County, Wisconsin
- Dayton, a city in Waupaca County, Wisconsin
- Dayton, a city in Sheridan County, Wyoming