| Mestwin II of Pomerelia | |
|---|---|
 Image of Mestwin at the cloister in Oliwa | |
| Duke of Pomerelia | |
| Reign | 1271–1294 |
| Predecessor | Swietopelk II |
| Successor | Przemysł II of Poland |
| Duke of Świecie | |
| Reign | from around 1250 until 1294 |
| Born | around 1220 |
| Died | 29 December 1294 Gdańsk |
| House | Samborides |
| Father | Swietopelk II |
| Mother | Eufrozyna of Bohemia |
Mestwin II (Polish: Mściwój II or Mszczuj II) (c. 1220 – December 25, 1294) was a Duke of Pomerelia, member of the Samborides dynasty. He ruled Pomerelia as a sole ruler from 1273 to 1294.