| Rouilly-Saint-Loup | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason rouilly saint loup.svg |
| Arrondissement: | Troyes |
| Canton: | Vendeuvre-sur-Barse |
| Insee: | 10329 |
| Postal Code: | 10800 |
| Mayor: | Jean-Marie Castex[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Troyes Champagne Métropole |
| Coordinates: | 48.2633°N 4.1511°W |
| Elevation M: | 112 |
| Area Km2: | 11.26 |
Rouilly-Saint-Loup (pronounced as /fr/) is a commune in the Aube department in north-central France.
The Barse flows through the commune.