Armendarits (Basque: Armendaritze) 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 Armendariztar.
Amendarits is located some 12 km south-west of Saint-Palais and some 8 km north-east of Irissarry and is in the former province of Lower Navarre. Access to the commune is by road D300 from Iholdy in the south to the village. The D8 going east from Iholdy also passes through the southern part of the commune. The D245 from Hélette in the west passes through the commune and the village and continues north to join the D14 just south-east of Méharin. There is also the D408 which links the village to the D8 road inside the commune. Apart from a few patches of forest the commune is entirely farmland.
Numerous streams rise in the commune: the Erreka Handia and its tributaries flows north past the village, the Iharte also flows north to the east of the village, and the Ossinako Erreka forms part of the south-western border as it flows south.