Beaucens (French pronunciation: [bosɛ̃s]; Occitan: Beucens) is a commune in the Hautes-Pyrénées department in the Occitanie region of south-western France.

Most of the commune is rugged and inaccessible with some farmland in the west and forests south-east of the village.

The Hautacam Ski resort is located in the centre of the commune[5][6] The Gave du Pau Ou du Lavedan flows through the west of the commune from south to north forming the Lac des Gaves before continuing north to become the Gave de Pau north of the commune.

The Ruisseau d'Estibos rises in the east of the commune and forms part of the north-eastern border before continuing west to join the Gave du Pau Ou du Lavedan.

The Ruisseau d'Isaby flows east from the Lac d'Isaby forming part of the south-eastern border of the commune as it flows south-west to join the Gave de Gavarnie Ou de Pau at Soulom.