Sir Ben Bowen Thomas (18 May 1899 – 26 July 1977) was a Welsh civil servant and university President. He served as Permanent Secretary to the Welsh Department of the Ministry of Education from 1945 to 1963, and was President of the University of Wales, Aberystwyth from 1964 to 1975. In June 1977 Thomas was awarded an Honorary Degree from the Open University as Doctor of the University.