Briaucourt (French pronunciation: [bʁijokuʁ]) is a commune in the Haute-Saône department in the region of Bourgogne-Franche-Comté in eastern France.

The Lanterne River flows through the commune.

To the South it borders the communes of Velorcey, Abelcourt, Sainte-Marie-en-Chaux, from southeast to southwest, respectively.

To the west it borders the communes of Ormoiche and Francalmont.

To the north it borders Ainville, and to the northeast, Plainemont.