Rosny-sous-Bois is a commune in the eastern suburbs of Paris, France. It is located 10.1 km (6.3 mi) from the center of Paris.
It is the seat of the national centre of road information of the national gendarmerie.
The arms of Rosny-sous-Bois are blazoned :
Azure, an eagle rampant argent, holding in his right talon an olive branch palewise Or.
Rosny-sous-Bois is served by two stations on Paris RER line E: Rosny – Bois-Perrier and Rosny-sous-Bois.