Hańcza (Lithuanian: Ančia) is a lake in Suwałki Region, Podlaskie Voivodeship, Poland. It is 311.4 ha large, 4.5 km long and 1.2 km at its widest. It is the deepest lake in Poland with a maximum depth of 108.5 m. The Czarna Hańcza river flows through it.
| Hańcza | |
|---|---|
 August 2004 | |
  Hańcza  Hańcza | |
| Location | Suwałki Region |
| Coordinates | 54°16′N 22°49′E / 54.267°N 22.817°E |
| Basin countries | Poland |
| Max. length | 4.5 km (2.8 mi) |
| Max. width | 1.2 km (0.75 mi) |
| Surface area | 311.4 ha (769 acres) |
| Max. depth | 108.5 m (356 ft) |