Nawab Arastu Yar Jung (10 June 1858 – 25 March 1940)(Arabic: نواب أرسطو يار جنك) was a Hyderabadi Surgeon. He became well known during late Nizam period of Hyderabad, during the early 20th century, for being chief physician and advisor to the Nizam of the time, Mahbub Ali Khan, Asaf Jah VI, and later becoming a prominent philanthropist in what is known today as the "Old City" portion of Hyderabad.