Aste-Béon (French pronunciation: [ast beɔ̃]; Occitan: Asta e Bion) is a commune in the Pyrénées-Atlantiques department in the Nouvelle-Aquitaine region of south-western France.

The D290 connects the village of Béon in the north-east to the D934 road which runs from north to south parallel to the commune's western border.

The Arrigast flows into the Gave d'Ossau from the left bank forming the northern border of the commune on that side of the river.

[20] A Natural reserve of nesting vultures was created by a Ministerial Decree of 11 December 1974 and is located across the territories of Aste-Béon, Bielle, Bilhères, and Castet.

[5] The commune is traversed from north to south by the GR of Pays du tour de la vallée d'Ossau.