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 Gaston (comics), a Belgian comic strip by André Franquin Gaston (climbing), the climbing technique named after Gaston Rébuffat Gaston (seal), a brown fur seal that escaped from the Prague Zoo during the 2002 European floods Gaston College, a community college in North Carolina "Gaston" (song), a song from Disney's Beauty and the Beast Tropical Storm Gaston, a number of named tropical cyclones