Bar-lès-Buzancy is located some 20 km east by north-east of Vouziers and 25 km west by south-west of Stenay.
Access to the commune is by the D947 road from Buzancy in the south-east which passes through the south of the commune and the village and continues west to Harricourt.
The D6 goes north from the D947 forming the western border of the commune and continuing north to Sommauthe.
The commune is mostly farmland with some forest in the north.

The Ruisseau du Moulin rises in the north of the commune and forms part of the northern border before flowing south through the commune and the village and continuing south to join the Canal des Arches near Briquenay.
La Hideuse stream forms the southern border of the commune as it flows south-west to join the Canal de Thenorgues.
Bar-lès-Buzancy is located some 20 km east by north-east of Vouziers and 25 km west by south-west of Stenay. Access to the commune is by the D947 road from Buzancy in the south-east which passes through the south of the commune and the village and continues west to Harricourt. The D6 goes north from the D947 forming the western border of the commune and continuing north to Sommauthe. The commune is mostly farmland with some forest in the north.
The Ruisseau du Moulin rises in the north of the commune and forms part of the northern border before flowing south through the commune and the village and continuing south to join the Canal des Arches near Briquenay. La Hideuse stream forms the southern border of the commune as it flows south-west to join the Canal de Thenorgues.
Bar-lès-Buzancy