Shikaripura Ranganatha Rao (Kannada: ಶಿಕಾರಿಪುರ ರಂಗನಾಥ ರಾವ್) (1 July 1922 – 3 January 2013), commonly known as Dr. S. R. Rao, was an Indian archaeologist who led teams credited with discoveries of a number of Harappan sites including the port city Lothal and Bet Dwarka in Gujarat.