Boulogne

Boulogne might mean any of these different places in France;

Boulogne, Vendée, a commune in the Vendée department
Boulogne-Billancourt, a town in the Hauts-de-Seine department
Boulogne-sur-Helpe, a commune in the Nord department
Boulogne-sur-Mer, a commune in the Pas-de-Calais department