Langon is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.
Langon serves as the seat of its district, canton and subprefecture. Its inhabitants are called Langonnais.
Langon is in the northern part of the department 48 km (30 mi) southeast of Bordeaux on the left bank of the Garonne river. It lies near the border between a wine-growing region and the forest of Landes.
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