Les Alleux () is a former commune in the Ardennes department in northern France. On 1 January 2016, it was merged into the new commune Bairon et ses environs.
Les Alleux is some east of Rethel and north of Vouziers. The commune can be accessed by the D977 road from Vouziers in the south passing through the commune to the east of the village and continuing to Le Chesne in the north. Access to the village is by the D23 road from Voncq in the west and continuing north to join the D977 inside the commune. Most of the east and west of the commune are forested with the central part farmland.
An unnamed stream rises south of the village and flows north-west to join the Ruisseau des Graquinettes just west of the commune.
Source:
List of Successive Mayors
The inhabitants of the commune are known as Alleusiens or Alleusiennes, or alternatively Alleutiers or Alleutières in French.