| Lake Rusałka | |
| Pushpin Map: | Greater Poland Voivodeship |
| Type: | artificial lake |
| Inflow: | Bogdanka |
| Outflow: | Bogdanka |
| Basin Countries: | Poland |
| Area: | 36.70NaN0 |
| Max-Depth: | 90NaN0 |
| Cities: | Poznań |
Lake Rusałka is an artificial lake in Poznań, Poland with an area of 367,000 square metres. It was named after the water nymph Rusalka. It was formed in 1943 as a result of the damming of the Bogdanka River. In 1940 thousands of people were executed in the forests surrounding the lake.