| Markgrafneusiedl | |
| Settlement Type: | Municipality |
| Pushpin Map: | Austria |
| Pushpin Mapsize: | 270 |
| Pushpin Map Caption: | Location within Austria |
| Coordinates: | 48.2667°N 53°W |
| Subdivision Type: | Country |
| Subdivision Name: | Austria |
| Subdivision Type1: | State |
| Subdivision Name1: | Lower Austria |
| Subdivision Type2: | District |
| Subdivision Name2: | Gänserndorf |
| Parts Style: | para |
| Leader Title: | Mayor |
| Leader Name: | Erwin Hrabal |
| Elevation M: | 154 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 2282 |
| Area Code Type: | Area code |
| Area Code: | 02248 |
Markgrafneusiedl is a town in the district of Gänserndorf in the Austrian state of Lower Austria.
During the battle of Wagram the town formed the left flank of the Austrian position, and it fell to the French after heavy fighting between IV Austrian Corps and the French III Corps.
Markgrafneusiedl lies east of Vienna and southeast of Deutsch-Wagram in the Marchfeld, which is part of the Weinviertels. About 8.07 percent of the municipality is forested.