| Rouilly-Sacey | |
| Commune Status: | Commune |
| Arrondissement: | Troyes |
| Canton: | Brienne-le-Château |
| Insee: | 10328 |
| Postal Code: | 10220 |
| Mayor: | Patrick Dyon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Forêts, lacs, terres en Champagne |
| Coordinates: | 48.3469°N 4.2631°W |
| Elevation M: | 118 |
| Elevation Min M: | 113 |
| Elevation Max M: | 188 |
| Area Km2: | 19.48 |
Rouilly-Sacey (in French pronounced as /ʁuji sasɛ/) is a commune in the Aube department in north-central France.