| Saint-Étienne-sous-Barbuise | |
| Commune Status: | Commune |
| Arrondissement: | Troyes |
| Canton: | Arcis-sur-Aube |
| Insee: | 10338 |
| Postal Code: | 10700 |
| Mayor: | Maud Guyot[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.5008°N 4.11°W |
| Elevation M: | 100 |
| Elevation Min M: | 98 |
| Elevation Max M: | 140 |
| Area Km2: | 10.84 |
Saint-Étienne-sous-Barbuise (pronounced as /fr/, literally Saint-Étienne under Barbuise) is a commune in the Aube department in north-central France.