Alzonne (French pronunciation: [alzɔn] ⓘ; Occitan: Alzona) is a commune in the Aude department in the Occitanie region of southern France.

The Autoroute des Deux Mers (A61, E80) passes just 1 km south of the commune but the nearest exit is to the D43 near Bram.

[3] The Fresquel river runs from west to east through the commune passing just south of the village and joining the Aude at Carcassonne.

It is based on the Hydronymic root alz- meaning "alder" or "swamp" (Dauzat, Negre, Billy, Morvan) and the suffix -onna.

In this respect the situation of Alzonne has hardly changed since this small town is today the capital of the canton of its name in the arrondissement of Carcassonne.