Yusuf Ağa

Yusuf Ağa (died 1691) was the Kızlar Ağası, chief black eunuch of the imperial harem, under Sultan Mehmed IV and one of the palace's most powerful figures. His office supervised the imperial religious endowments for Mecca and Medina and had close ties to Egypt.

After the failed Siege of Vienna in 1683 he joined the enemies of Grand Vizier Kara Mustafa Pasha, helping bring about his downfall and execution. When Mehmed IV was deposed in 1687, Yusuf Ağa's estates were seized and he was exiled to Egypt, where he died in 1691.