| Feisnecksee | |
| Location: | Mecklenburgische Seenplatte district, Mecklenburg-Vorpommern |
| Pushpin Map: | Mecklenburg-Vorpommern |
| Coords: | 53.4958°N 12.7078°W |
| Inflow: | ditches e.g. from the Krummen See, Müritz and Waupacksee |
| Outflow: | ditch to Lake Müritz |
| Catchment: | 31.9km2 |
| Basin Countries: | Germany |
| Length: | 3.1km (01.9miles) |
| Width: | 0.6km (00.4miles) |
| Area: | 1.94km2[1] |
| Depth: | 7.5m (24.6feet) |
| Max-Depth: | 14m (46feet) |
| Volume: | 14570000km3 |
| Elevation: | 62.1m (203.7feet) above NHN |
| Cities: | Waren (Müritz) |
The Feisnecksee or Feisneck is a lake on the southeastern perimeter of the town of Waren in Mecklenburgische Seenplatte district in the German state of Mecklenburg-Western Pomerania. It lies at an elevation of 62.1 metres and its surface area is 1.94 km².
The Feisnecksee is joined to the Binnenmüritz to the northwest by a very narrow, shallow and unnavigable ditch. The road runs over a small bridge here that is only wide enough for large vehicles to pass in one direction at a time. The land bridge is about 150 metres wide at this point. The lake is a typical, glacial tunnel valley lake and is divided by a neck and the larger Burgwall Island into a north and south basins. It is about 3,100 metres long and 600 metres wide. Near the southern half is the Waren quarter of Damerow. The lakeshore is completely surrounded by a belt of reed and is also wooded in the south. In the north half of the lake is a bathing area. Fishing is only allowed by special permit because the lake lies in the national park.