| Montreuillon | |
| Commune Status: | Commune |
| Coordinates: | 47.1747°N 3.7889°W |
| Insee: | 58179 |
| Postal Code: | 58800 |
| Arrondissement: | Clamecy |
| Canton: | Château-Chinon |
| Mayor: | Alexandre Couvenant[1] |
| Term: | 2021 - 2026 |
| Elevation Min M: | 229 |
| Elevation Max M: | 426 |
| Area Km2: | 35.55 |
Montreuillon (in French pronounced as /mɔ̃tʁœjɔ̃/) is a commune in the Nièvre department in central France.[2]
On 1 January 2019, the estimated population was 259.
Montreuillon was the official centre of the Eurozone between 2001 and 2007.
It is the site of an impressive aqueduct over which runs the feeder canal linking the Pannecière reservoir with the Canal du Nivernais.