The canton of Boulogne-Billancourt-1 is an administrative division of the Hauts-de-Seine department, in northern France. It was created at the French canton reorganisation which came into effect in March 2015. Its seat is in Boulogne-Billancourt.^[1]

It consists of the following communes:^[1]

1. Boulogne-Billancourt (partly)

48°50′N 2°14′E / 48.84°N 2.24°E / 48.84; 2.24