| Aulnois-en-Perthois | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Aulnois-en-Perthois 55.svg |
| Arrondissement: | Bar-le-Duc |
| Canton: | Ancerville |
| Insee: | 55015 |
| Postal Code: | 55170 |
| Mayor: | Serge Muller[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Portes de Meuse |
| Coordinates: | 48.6356°N 5.13°W |
| Elevation Min M: | 229 |
| Elevation Max M: | 279 |
| Area Km2: | 10.75 |
Aulnois-en-Perthois is a commune in the Meuse department in the Grand Est region in northeastern France.