Salabat Jung, born as Mir Sa'id Muhammad Khan Siddiqi Bayafandi on 24 November 1718, was fourth Nizam of Hyderabad State. He was the third son of Asaf Jah I.

Nizam of Hyderabad was the title of the ruler of Hyderabad State. Nizam is a shortened form of Niẓām ul-Mulk, which means Administrator of the Realm, and was the title bestowed upon Asaf Jah I when he was appointed Viceroy of the Deccan by the Mughal Emperor Farrukhsiyar. In addition to being the Mughal Viceroy (Naib) of the Deccan, Asaf Jah I was also the premier courtier of the Mughal Empire until 1724, when he established the independent monarchy of Hyderabad and adopted the title "Nizam of Hyderabad".