William "Billy" Gunn (4 December 1858 – 29 January 1921) was an English sportsman who played internationally in both cricket and football. In first-class cricket, Gunn played professionally for Nottinghamshire from 1880 to 1904 and represented England in 11 Test matches. In football, he played for both Notts County and Nottingham Forest as an amateur and played twice for England, scoring one goal in the inaugural 1884 British Home Championship.