| Mourmelon-le-Petit | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Mourmelon-le-Petit (51).svg |
| Arrondissement: | Châlons-en-Champagne |
| Canton: | Mourmelon-Vesle et Monts de Champagne |
| Insee: | 51389 |
| Postal Code: | 51400 |
| Mayor: | René Maizieres[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Châlons-en-Champagne |
| Coordinates: | 49.1306°N 4.3103°W |
| Elevation Min M: | 96 |
| Elevation Max M: | 151 |
| Area Km2: | 12.19 |
Mourmelon-le-Petit (in French pronounced as /muʁməlɔ̃ lə pəti/) is a commune in the Marne department in north-eastern France.