| De Mars | |
| Settlement Type: | Hamlet |
| Native Name Lang: | nl |
| Image Map1: | Map NL - Buren - De Mars.png |
| Map Caption1: | The village (dark red) and the statistical district (light green) of De Mars in the municipality of Buren.--> |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | Gelderland |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Buren |
| Pushpin Map: | Netherlands Gelderland#Netherlands |
| Pushpin Map Caption: | Location in the province of Gelderland |
| Elevation Footnotes: | [1] |
| Elevation M: | 7 |
| Area Total Km2: | 7.29 |
| Population Footnotes: | [2] |
| Population Total: | 295 |
| Population As Of: | 2021 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 4033 |
| Area Code Type: | Dialing code |
| Area Code: | 0344 |
De Mars is a hamlet in the Dutch province of Gelderland. It is a part of the municipality of Buren, and lies about 8 km south of Veenendaal.
The area belonging to De Mars was originally located north of the Rhine river. However, the river bed now runs along a new route north of De Mars.
It was first mentioned in 1250 as in Marsche, and means "in the marsh".[3] In 1840, it was home to 219 people.[4] The postal authorities have placed it under Lienden.[5]