| Monistrol-d'Allier | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Monistrol d Allier(Haute-Loire).svg |
| Arrondissement: | Brioude |
| Canton: | Gorges de l'Allier-Gévaudan |
| Intercommunality: | CA du Puy-en-Velay |
| Mayor: | Olivier Depalle[1] |
| Term: | 2021 - 2026 |
| Coordinates: | 44.9692°N 3.6442°W |
| Elevation Min M: | 551 |
| Elevation Max M: | 1074 |
| Area Km2: | 27.32 |
| Insee: | 43136 |
| Postal Code: | 43580 |
Monistrol-d'Allier (pronounced as /fr/, literally Monistrol of Allier; oc|Monistròl d'Alèir) is a commune in the Haute-Loire department in south-central France.