The Army of the Western Pyrenees was one of the Republican French armies of the French Revolutionary Wars. From April 1793 until 12 October 1795, the army fought in the Basque Country and in Navarre during the War of the Pyrenees. After indecisive fighting during the first year of its existence, the army seized the Spanish port of San Sebastián in August 1794. By the time the Peace of Basel was signed on 22 July 1795, the Army of the Western Pyrenees held a significant portion of northeastern Spain.

The War of the Pyrenees, also known as War of Roussillon or War of the Convention, was the Pyrenean front of the First Coalition's war against the First French Republic. It pitted Revolutionary France against the kingdoms of Spain and Portugal from March 1793 to July 1795 during the French Revolutionary Wars.