| Montaigu-le-Blin | |
| Commune Status: | Commune |
| Arrondissement: | Vichy |
| Canton: | Saint-Pourçain-sur-Sioule |
| Insee: | 03179 |
| Postal Code: | 03150 |
| Mayor: | Jean-Louis Périchon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Entr'Allier Besbre et Loire |
| Coordinates: | 46.2953°N 3.5119°W |
| Elevation M: | 331 |
| Elevation Min M: | 263 |
| Elevation Max M: | 342 |
| Area Km2: | 12.96 |
Montaigu-le-Blin (in French pronounced as /mɔ̃tɛɡy lə blɛ̃/) is a commune in the Allier department in central France. It was first mentioned in the 10th century as Mons Acutus.