| Unieść | |
| Mouth Coordinates: | 54.2731°N 16.2092°W |
| Subdivision Type1: | Country |
| Length: | 26km (16miles) |
| Basin Size: | 228km2 |
Unieść (Kashubian: Ùniesc, German: Nestbach) is a river in West Pomeranian Voivodeship of Poland. It is located west of Sianów in the historic Farther Pomerania region on the Baltic coast. The river empties into the Jamno lake.