Wenceslaus II of Cieszyn (Polish: Wacław II cieszyński; 1488/96 – 17 November 1524) was a Duke of Cieszyn from 1518 until his death (as co-ruler of his father).

The decision of Casimir II to destine his eldest son Frederick to the Church career placed Wenceslaus as the presumed successor of his father.

Frederick's death in 1507 led Wenceslaus II as the sole heir of Casimir II, but it wasn't until 1518 that he was named co-ruler of the Duchy of Cieszyn.

However, he died four years before his father, so Wenceslaus II never ruled alone.

After Casimir II's death in 1528 he was succeeded by his grandson Wenceslaus III Adam, the only surviving son of Wenceslaus II.