Jack Miller (10 August 1906 – October 1978) also known by the nickname of "Cod", due to his profession as a Fishmonger, was an English professional rugby league footballer who played in the 1920s, 1930s and 1940s.

Over his 20-year career he made 526 appearances for Warrington, a club record which was broken in 1959 by Brian Bevan.

Jack was married to Margaret who was a model and fashion assistant at Broadbents in Warrington.

Miller played in Warrington's 15-2 victory over Salford in the 1929 Lancashire Cup Final during the 1929–30 season at Central Park, Wigan on Sat 23 November 1929, the 10-9 victory over St. Helens in the 1932 Lancashire Cup Final during the 1932–33 season at Central Park, Wigan on Saturday 19 November 1932, and he played at second-row in the 8-4 victory over Barrow in the 1937 Lancashire Cup Final during the 1937–38 season at Central Park, Wigan on Saturday 23 October 1937.

[7] Miller won caps for England while at Warrington in 1928 against Wales, in 1933 against Other Nationalities, in 1936 against France, and Wales,[3] and won caps for Great Britain while at Warrington in 1933 against Australia (3 matches), and on the 1936 Great Britain Lions tour against Australia, and New Zealand (2 matches).