Romain (; also Romain-la-Roche) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.
Romain lies south of Rougemont on a plateau near the valley of the Doubs and the Ognon.
The Crotot cave has large galleries and stalactites.
The commune was known as Romain-la-Roche until 1918.