John Walter Douglas Hargreaves (December 20, 1931 –July 5, 2016) was a Canadian air force officer, athletic coach, and educator.
During his 19-year tenure as head football coach, he led the Queen's Golden Gaels to 16 consecutive OQIFC playoff appearances, winning 9 of 13 league championship games and posting two undefeated seasons.
Following his military tour, he was employed as a teacher at Sault Collegiate Institute, coaching a number of sports including football, where his 1958 team was quarterbacked by future Governor General David Johnston.
Shortly thereafter, he was promoted from Flight Lieutenant to Squadron Leader, becoming Command-level PERO based at CFB Trenton.
In 2012, he received an Honorary Doctorate of Laws from Queen's in recognition of his contributions to the university, intercollegiate athletics, the sport of football nationally and in Europe and for the positive impact he had on the lives of many hundreds of young people.