Lannemezan is a commune in the Hautes-Pyrénées department and the Occitanie region in south-western France. The inhabitants are called Lannemezanais.

Hautes-Pyrénées is a department in the region of Occitania, southwestern France. The department is bordered by Pyrénées-Atlantiques to the west, Gers to the north, Haute-Garonne to the east, as well by the Spanish province of Huesca in the autonomous community of Aragon to the south. In 2019, its population was 229,567; its prefecture is Tarbes. It is named after the Pyrenees mountain range.