- French commune.name
- Rosny-sur-Seine
- French commune.commune status
- Commune
- French commune.image
- Rosny-sur-Seine - Mairie01.jpg
- French commune.caption
- Town hall
- French commune.image coat of arms
- Blason ville fr Rosny-sur-Seine 78.svg
- French commune.arrondissement
- Mantes-la-Jolie
- French commune.canton
- Mantes-la-Jolie
- French commune.INSEE
- 78531
- French commune.postal code
- 78710
- French commune.mayor
- Pierre-Yves Dumoulin
- French commune.term
- 2020–2026
- French commune.intercommunality
- CU Grand Paris Seine et Oise
- French commune.elevation m
- 30
- French commune.elevation min m
- 17
- French commune.elevation max m
- 144
- French commune.area km2
- 19.36
