The former French Catholic diocese of Alet was created in 1317 from territory formerly in the diocese of Narbonne. The diocese continued until the French Revolution when it was suppressed by the Concordat of 1801.
Alet-les-Bains is located in south-west France, in the current department of Aude. The diocese was divided between: diocese of Carcassonne (to which the bishopric was formally attached) the diocese of Toulouse and the diocese of Perpignan.
Coordinates: 42°59′44″N 2°15′21″E / 42.9956°N 2.2557°E