Araujuzon (French pronunciation: [aʁoʒyzɔ̃]; Occitan: Lajuson) is a commune in the Pyrénées-Atlantiques department in the Nouvelle-Aquitaine region of southwestern France.

The town is located some 40 km north-west of Oloron-Sainte-Marie, 15 km east by south-east of Sauveterre-de-Béarn, and 8 km north-west of Navarrenx.

Araujuzon is accessed by the D936 road from Oloron-Sainte-Marie which passes through the north of the commune and continues west to Autevielle-Saint-Martin-Bideren. There is also the D160 road from the southern border where it joins the D115 passing through the length of the commune to the D936 west of the village. The D265 road also links the north of the commune to Narp. The village is close to the D936 and can be reached by a number of country roads.

The Intercity network of Pyrénées-Atlantiques bus network currently has a stop in the commune on Route 850 from Oloron-Sainte-Marie to Sauveterre-de-Béarn.

Located in the Drainage basin of the Adour, the northern border of the commune is formed by the Gave d'Oloron (a tributary of the Gave de Pau River) with its tributary, the Lausset, passing through the commune and joining the Gave d'Oleron near the village. The Ruisseau de la Mousquere rises in the commune and gathers several tributaries while flowing north-west to join the Gave d'Oleron.

The Cassou dou Boue and the Ruisseau de Lescuncette rise in the south of the commune and flow south-east to join the Ruisseau de Harcellane (a tributary of the Lausset).

The name of the commune in Béarnese is Araus-Juzon (according to classical norm of Occitan). The commune name in Gascon is Lajuson.

For Michel Grosclaude, the name comes from lau ("wasteland" or "moor") and juzon ("lower" or "downstream"). Brigitte Jobbé-Duval indicated that Juzon meaning "underneath" gives the place name translating as "underneath Arrau", but more likely "underneath Araux" (Araux is called Araus-Susonin Béarnese).