Tajuddin Yildoz (Persian: تاجالدین ییلدز) was a Turkic slave of Sultan Shahabuddin Muhammad Ghauri who rose to become ruler of Ghazni after Ghauri's death. Tajuddin Yildoz twice tried to conquer Sindh but Nasir-ud-Din Qabacha defeated him in 1210. During the rule of Iltutmish he also tried to lay his claim on Delhi but was defeated by the former at Tarain.