Asson is a French commune in the Pyrénées-Atlantiques department in the Aquitaine region of south-western France.
The inhabitants of the commune are known as Assonais or Assonaises.
Asson is a large commune in the Ouzom Valley some 30 km south by south-east of Pau and 35 km east by south-east of Oloron-Sainte-Marie which almost completely surrounds the commune of Arthez-d'Asson. The south-eastern border of the commune is the border between the departments of Pyrenees-Atlantiques and Hautes-Pyrénées. Access to the commune is by the D35 road from Igon in the east which passes through the village and continues west to Bruges-Capbis-Mifaget. The D36 road comes from Nay in the north to join the D35 just west of the village. The D126 road goes south from the village to Arthez-d'Asson. The D226 branches from the D126 and goes east by a circuitous route to Lestelle-Betharram. The southern half of the commune is mountainous and heavily forested while the north is farmland with scattered small patches of forest.
Arthez-d'Asson (Occitan: Artés d'Asson) is a French commune in the Pyrénées-Atlantiques department in the Aquitaine region of south-western France.
The inhabitants of the commune are known as Arthéziens or Arthéziennes
Arthez-d'Asson is in the Ouzom Valley some 30 km south by south-east of Pau and 35 km east by south-east of Oloron-Sainte-Marie. The commune is almost entirely surrounded by the commune of Asson. Access to the commune is by road D126 which comes from Asson in the north passing through the commune and the village, continuing south up the Valley to Ferrières. The commune is almost entirely farmland although with patches of forest particularly along the river.
The Ouzom River flows through the length of the commune from south to north gathering some tributaries on the right bank, such as the Cau du Hau, the Cau du Gat, the Arriou Sec, and the Cau de la Heche, and continuing north to join the Gave de Pau near Coarraze.The Ruisseau de Thouet forms the north-western border of the commune as it flows north-east to join the Ouzom.