Belvoir (French pronunciation: [bɛlvwaʁ]) is a commune in the Doubs department in the Bourgogne-Franche-Comté region in eastern France.

Belvoir lies 18 km (11 mi) southeast of Clerval on a prominent hill.

It has been rebuilt, now dating to the 12th-17th centuries, and the date of 1224 inscribed above the arch of the north tower is the oldest inscription in Arabic numerals in the region.

Of the first lords of Belvoir [fr], a branch of the Rougemont family [fr], Hue (Huon) I (c. 1188-1239) was a Crusader.

[3] The domain later became the property of the Cusance family, of which Béatrix de Cusance is arguably the most famous member, and the Rohan family were the last noble owners of the castle.