| Étampes-sur-Marne | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Étampes-sur-Marne.svg |
| Arrondissement: | Château-Thierry |
| Canton: | Château-Thierry |
| Insee: | 02292 |
| Postal Code: | 02400 |
| Mayor: | Jean-Luc Magnier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Région de Château-Thierry |
| Coordinates: | 49.035°N 3.42°W |
| Elevation M: | 90 |
| Elevation Min M: | 59 |
| Elevation Max M: | 213 |
| Area Km2: | 2.24 |
Étampes-sur-Marne (pronounced as /fr/, literally Étampes on Marne) is a commune in the Aisne department in Hauts-de-France in northern France. It lies adjacent to the south of the town Château-Thierry.