Nurbanu Sultan (Ottoman Turkish: ??? ???? ??????; c.
1525 – 7 December 1583) was Haseki Sultan of the Ottoman Empire as the principal consort and later legal wife of Sultan Selim II (reign 1566–1574), as well as Valide Sultan as the mother of Sultan Murad III (reign 1574–1595).
Conflicting theories ascribe her a Venetian, Jewish or Greek origin.
Her birth name may have been Cecilia Venier-Baffo, Rachel or Kale Kartanou.
Nurbanu was one of the prominent figures during the era known as Sultanate of Women and she was an administrator Empire from 1570 until 1583.