- Elias Dayton (1737-1807), Colonel and father of Jonathan and builder of Fort Dayton
- Jonathan Dayton (1760-1824), son of Elias, signer of the United States Constitution, and Speaker of the House
- Dayton Clarence Miller (1866-1941), an American physicist and astronomer
- Dayton Allen (1919-2004), a comedian and voice actor
- Mark Dayton (b. 1947), former United States Senator from Minnesota
- Dayton, Alabama
- Dayton, Idaho
- Dayton, Indiana
- Dayton, Iowa
- Dayton, Kentucky
- Dayton, Maine
- Dayton, Maryland
- Dayton, Michigan
- Dayton, Minnesota
- Dayton, Montana
- Dayton, Nevada
- Dayton, Newark , a neighborhood in Newark, New Jersey
- Dayton, New Jersey
- Dayton, New York
- , largest and best known Dayton, named after Jonathan Dayton
- Dayton, Oregon
- Dayton, Pennsylvania
- Dayton, Tennessee , known as the site of the 1925 Scopes Trial .
- Dayton, Texas
- Dayton, Virginia
- Dayton, Washington
- Dayton, Wisconsin
- --- Dayton, Richland County, Wisconsin
- --- Dayton, Waupaca County, Wisconsin
- Dayton, Wyoming
- Dayton Township, Michigan
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