| Montlay-en-Auxois | |
| Commune Status: | Commune |
| Arrondissement: | Montbard |
| Canton: | Semur-en-Auxois |
| Insee: | 21434 |
| Postal Code: | 21210 |
| Mayor: | Xavier Troullier[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 47.3506°N 4.2814°W |
| Elevation M: | 384 |
| Elevation Min M: | 336 |
| Elevation Max M: | 527 |
| Area Km2: | 17.36 |
Montlay-en-Auxois (in French pronounced as /mɔ̃lɛ ɑ̃.n‿o(k)swa/) is a commune in the Côte-d'Or department in eastern France.