Ainhice-Mongelos (Basque: Ainhize-Monjolose) is a French commune in the Pyrénées-Atlantiques department in the Aquitaine region of southwestern France.
It is located in the former province of Lower Navarre.
The inhabitants of the commune are known as Ainhiztars or Monjolostars.
The town is part of the country Basque province of Cize of Lower Navarre. It is located in the Pyrenees mountains some 40 km in a direct line south-east of Bayonne and about 15 km north-east of the Spanish border. The commune is mostly farmland with scattered small forests.
Access to Ainhice-Mongelos is via the Highway D933 (old highway 133) which runs north-east from Saint-Jean-le-Vieux which runs from south-west to north-east along the eastern side of the commune through the village of Mongelos continues north-eastwards ending near Saint Palais. Just south of the commune at Lacarre the Highway D422 branches from the D933 to the north-west and passes through the western side of the commune ending at Lopeenia just to the west of the commune. No other highways enter the commune. The village of Anhice-Mongelos can be reached by a country road from the D933 at Mongelos or by any of the many country roads which cover the commune.