| Mornay-sur-Allier | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Amand-Montrond |
| Canton: | Dun-sur-Auron |
| Insee: | 18155 |
| Postal Code: | 18600 |
| Mayor: | Isabelle Perez[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Les Trois Provinces |
| Coordinates: | 46.8197°N 3.0297°W |
| Elevation M: | 200 |
| Elevation Min M: | 179 |
| Elevation Max M: | 222 |
| Area Km2: | 21.62 |
Mornay-sur-Allier (in French pronounced as /mɔʁnɛ syʁ alje/) is a commune in the Cher department in the Centre-Val de Loire region of France.
An area of lakes and streams, forestry and farming comprising the village and several hamlets situated by the banks of the river Allier, some 33miles southeast of Bourges, at the junction of the D45 and the D2076 roads. The commune borders the departments of Allier and Nièvre.