Frederick William | |
|---|---|
| Duke of Cieszyn | |
 | |
| Born | 9 November 1601 Teschen |
| Died | 19 August 1625 |
| Noble family | Silesian Piasts |
| Issue | (illeg.) Maria Magdalena |
| Father | Adam Wenceslaus, Duke of Cieszyn |
| Mother | Elisabeth Kettler of Courland |
Frederick William of Cieszyn (German: Friedrich Wilhelm von Teschen; Czech: Bedřich Vilém Těšínský; Polish: Fryderyk Wilhelm cieszyński; 9 November 1601 – 19 August 1625) was a Duke of Cieszyn (Teschen) since 1617 until his death; he was the last male scion of the Cieszyn branch of Silesian Piasts.