| Marsainvilliers | |
| Commune Status: | Commune |
| Arrondissement: | Pithiviers |
| Canton: | Le Malesherbois |
| Insee: | 45198 |
| Postal Code: | 45300 |
| Mayor: | Didier Monceau[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pithiverais |
| Coordinates: | 48.2222°N 2.2853°W |
| Elevation Min M: | 119 |
| Elevation Max M: | 132 |
| Area Km2: | 10.82 |
Marsainvilliers (in French pronounced as /maʁsɛ̃vilje/) is a commune in the Loiret department in north-central France. The poet Micheline Dupray was born in Marsainvilliers in 1929.
The name of inhabitants are Marsainvilloises