Lieutenant Colonel Dr John Rajathurai Rockwood, VD (29 October 1881 – 2 December 1935) was the leading administrator and patron of cricket in Ceylon from 1914 to 1935. He helped put the nation's cricket administration in the hands of the Ceylonese, and served as President of the Ceylon Cricket Association from its formation in 1922 until 1933. A doctor, he was also a commanding officer of the Ceylon Medical Corps.