John Robert Beyster, American physicist and academic (b. 1924)
John Robert Beyster (July 26, 1924 – December 22, 2014), often styled J. Robert Beyster, was an American scientist and entrepreneur, and the founder of Science Applications International Corporation. He was Chairman of the Board until his retirement in July 2004, and served as Chief Executive Officer (CEO) until November 2003. Beyster's primary areas of interest were national security and nuclear reactor physics. Beyster also founded two nonprofit organizations to assist organizations considering employee ownership: the Beyster Institute and the Foundation for Enterprise Development.