Thomas Alfred Cotterill (27 January 1884 – 31 August 1943) was a New Zealand rugby league player who represented New Zealand in 1911, touring Australia. His one and only match for New Zealand was against Queensland on July 1 where he came on as an injury replacement for Ernie Asher. New Zealand won the match 24–13 in front of 7,000 spectators at the Brisbane Cricket Ground.