| Saint-Agnan-sur-Erre | |
| Arrondissement: | Mortagne-au-Perche |
| Canton: | Ceton |
| Insee: | 61359 |
| Postal Code: | 61340 |
| Commune: | Val-au-Perche |
| Coordinates: | 48.3197°N 0.7272°W |
| Elevation M: | 111 |
| Elevation Min M: | 107 |
| Elevation Max M: | 208 |
| Area Km2: | 5.28 |
| Population: | 167 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Saint-Agnan-sur-Erre (in French pronounced as /sɛ̃t‿aɲɑ̃ syʁ ɛʁ/) is a former commune in the Orne department in north-western France. On 1 January 2016, it was merged into the new commune of Val-au-Perche.[2]