John Burton Rix (March 24, 1882 – August 8, 1964) was an American football and basketball player and coach. He served as the head football coach at Austin College (1909–1910), Southwestern University (1914–1916), Southern Methodist University (1917–1921), the University of Miami (1929), compiling a career college football coaching record of 39–34–11. Rix was also the head basketball coach at the University of Texas at Austin (1911–1912) and at Southern Methodist (1917–1921), tallying a career college basketball mark of 29–37.