Aressy (French pronunciation: [aʁɛsi]; Occitan: Arèssi) is a commune in the Pyrénées-Atlantiques department in the Nouvelle-Aquitaine region of south-western France.

Brigitte Jobbé-Duval[6] indicates that the place name could come from the Basque, meaning "place where there are rocks" which would confirm the hypothesis by Michel Grosclaude[7] of ar- ("stone or rock") with the Basque locative suffix -etz transformed into -esse.

Sources: Origins: Paul Raymond noted on page 9 of his dictionary that the commune had a Lay Abbey, vassal of the Viscounts of Béarn.

[5] List of Successive Mayors[13] Aressy is part of nine inter-communal structures: The inhabitants of the commune are known as Arésyiens or Arésyiennes in French.

[14] The commune is part of the Appellation d'origine contrôlée (AOC) zone designation of Ossau-iraty.