Rosny
Rosny is the name
- several places and administrative areas:
- Rosny-sous-Bois in France, in the Seine-Saint-Denis department
- Rosny-sur-Seine in France, in the Yvelines department near Mantes-la-Jolie
- Canton of Rosny-sous-Bois in the French department of Seine-Saint-Denis
- several people:
- the Boex brothers, known as writers under the pseudonyms J.-H. Rosny and J.-H. Rosny aîné and J.-H. Rosny Jeune
- Léon de Rosny (1837–1914), professor of oriental languages