| Treis-Sants-en-Ouche | |
| Commune Status: | Commune |
| Arrondissement: | Bernay |
| Canton: | Bernay |
| Insee: | 27516 |
| Postal Code: | 27300 |
| Intercommunality: | Bernay Terres de Normandie |
| Coordinates: | 49.0514°N 0.6069°W |
| Elevation Min M: | 105 |
| Elevation Max M: | 175 |
| Area Km2: | 30.73 |
Treis-Sants-en-Ouche is a commune in the Eure department in Normandy in northern France. It was established on 1 January 2019 by merger of the former communes of Saint-Aubin-le-Vertueux (the seat), Saint-Clair-d'Arcey and Saint-Quentin-des-Isles.[1]