Jack Ettwell George Sexton (27 February 1900 – 26 October 1935) was an Australian rules footballer who played in the South Australian National Football League (SANFL) and for Fitzroy in the Victorian Football League (VFL).
Sexton was a centreman and started his career in 1925 with Glenelg.
In 1930, he crossed to West Adelaide after a dispute over his salary.
He won a Magarey Medal in 1931 and in the following season, he moved to Victoria and joined Fitzroy.
He captained Fitzroy in 1932 and 1933 and played a total of 29 VFL games before returning to South Australia in 1935.
Now playing with Norwood as captain-coach, Sexton starting suffering from pleurisy and was forced to resign just six games into the season.
He finished with a total of 101 senior games and in October that year, he died from his illness.