John Anthony "Ox" Miller (May 4, 1915 – August 13, 2007) was a professional baseball pitcher. He played parts of four seasons in Major League Baseball, between 1943 and 1947, for the Washington Senators (1943), St. Louis Browns (1943, 1945–46) and Chicago Cubs (1947). Listed at 6 ft 1 in (1.85 m), 190 lb (86 kg), he batted and threw right-handed. Born in Gause, Texas, Miller posted a 4–6 record with 27 strikeouts and a 6.38 ERA in 24 appearances, including 10 starts, four complete games, and 912⁄3 innings pitched.