| Le Petit-Mercey | |
| Coordinates: | 47.1936°N 5.745°W |
| Insee: | 39414 |
| Postal Code: | 39350 |
| Arrondissement: | Dole |
| Canton: | Authume |
| Commune: | Dampierre |
| Elevation Min M: | 240 |
| Elevation Max M: | 278 |
| Area Km2: | 2.49 |
| Population: | 127 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Le Petit-Mercey (in French pronounced as /lə pəti mɛʁsɛ/) is a former commune in the Jura department in Bourgogne-Franche-Comté in eastern France. On 1 January 2019, it was merged into the commune Dampierre.[2]