Ballay is a commune in the Ardennes department in the Grand Est region of northern France. Ballay is located some 35 km east by south-east of Rethel and 3 km north of Vouziers. Access to the commune is by the D977 road from Vouziers which passes through the centre of the commune and the village and continues north to Quatre-Champs. The D19 road from Quatre-Champs to Vandy forms part of the northern border of the commune. Apart from the village there are the hamlets of Claire-Fontaine, Landèves, and La Noue Adam. The commune is mostly forested in the east and west with farmland down the centre.
Country: France
Region: Grand Est
Area: 10.46 km² (4.04 sq mi)
Elevation: 91–221 m (299–725 ft) · (avg. 100 m or 330 ft)