Unico Wilhelm Wassenaer Notenblättermusik
- Geboren: 2nd November 1692
- Gestorben: 6th November 1766
- Geburtsort: Delden, Niederlande
Unico Willem was born in Delden (Netherlands), into a family of generals, admirals and personages holding high positions in the government of the Dutch Republic, gaining more and more wealth through marriage and their own influential positions.