Gaston is a masculine given name or surname. It may also refer to:
Places
- Gaston, California, an unincorporated community
- Fort Gaston, California, founded in 1859, abandoned in 1892
- Gaston, Indiana, a town
- Gaston, North Carolina, a town
- Gaston County, North Carolina
- Gaston, Oregon, a city
- Gaston, South Carolina, a town
- Gaston, West Virginia, an unincorporated community
- A variant spelling of Gastun, present-day Bagras, a Crusader castle in Turkey
- Gaston (crater), an impact crater on the Moon
Other uses