Rosny-sous-Bois () is a commune in the eastern suburbs of Paris, France. It is located from the centre of Paris.
It is the seat of the national centre of road information of the national gendarmerie.
The current Hôtel de Ville was completed in 1964.
Rosny-sous-Bois is served by two stations on Paris RER E: and .
The commune has seven public primary school groups, with each having a preschool (maternelle) and an elementary school. There is also a private Montessori French-English bilingual primary school, Ecole maternelle privée ëLes merveillesû.
Secondary schools: