| Trizay-Coutretot-Saint-Serge | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Trizay-Coutretot-Saint-Serge (Eure-et-Loir).svg |
| Arrondissement: | Nogent-le-Rotrou |
| Canton: | Nogent-le-Rotrou |
| Insee: | 28395 |
| Postal Code: | 28400 |
| Mayor: | Bertrand de Monicault[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Perche |
| Coordinates: | 48.2933°N 0.8681°W |
| Elevation M: | 150 |
| Elevation Min M: | 125 |
| Elevation Max M: | 230 |
| Area Km2: | 11.15 |
Trizay-Coutretot-Saint-Serge (pronounced as /fr/) is a commune in the Eure-et-Loir department in northern France.