Rubel Lex Phillips, Sr. (March 29, 1925 – June 18, 2011) was an attorney, businessman, and politician from the U.S. state of Mississippi best known for his Republican gubernatorial campaigns waged in 1963 and 1967.Previously, as a Democrat, Phillips was a circuit court clerk in Alcorn County in northeastern Mississippi and a member and chairman of the Mississippi Public Service Commission from 1956 to 1959.