| Avesnes-en-Saosnois | |
| Commune Status: | Commune |
| Arrondissement: | Mamers |
| Canton: | Mamers |
| Insee: | 72018 |
| Postal Code: | 72260 |
| Mayor: | Patrice Basselot[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Maine Saosnois |
| Coordinates: | 48.2642°N 0.3719°W |
| Elevation Min M: | 63 |
| Elevation Max M: | 111 |
| Area Km2: | 5.68 |
| Demonym: | Avesnois, Avesnoise |
Avesnes-en-Saosnois (in French pronounced as /avɛn ɑ̃ sonwa/) is a commune in the Sarthe department in the region of Pays de la Loire in northwestern France.