| Marly-sous-Issy | |
| Commune Status: | Commune |
| Insee: | 71280 |
| Postal Code: | 71760 |
| Arrondissement: | Charolles |
| Canton: | Gueugnon |
| Mayor: | Bruno Pouchelet[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 46.7167°N 3.9333°W |
| Elevation M: | 320 |
| Elevation Min M: | 265 |
| Elevation Max M: | 412 |
| Area Km2: | 21.42 |
Marly-sous-Issy (in French pronounced as /maʁli suz‿isi/, literally Marly under Issy) is a commune in the Saône-et-Loire department in the region of Bourgogne-Franche-Comté in eastern France. The art historian Étienne Michon (1865–1939) was born in Marly-sous-Issy.