| Gülper See | |
| Location: | Brandenburg |
| Pushpin Map: | Brandenburg |
| Coords: | 52.7394°N 12.2544°W |
| Inflow: | Rhin |
| Outflow: | Rhin |
| Basin Countries: | Germany |
| Area: | 6.6km2 |
| Depth: | 1.5m (04.9feet) |
| Max-Depth: | 3m (10feet) |
| Elevation: | 23.6m (77.4feet) |
Gülper See is a lake in Brandenburg, Germany. At an elevation of 23.6 m, its surface area is 6.6 km². It is located in the municipality of Havelaue, Havelland district.Since 1978 the lake has been included in a protected Ramsar site.