Harold Willers (born September 2, 1958) is a Canadian former athlete who specialised in the hammer throw.

[1] A Victoria, British Columbia native, Willers attended Claremont Secondary School and took up the hammer throw as a varsity athlete at Simon Fraser University, where he set a record throw of 67.28 m and won three NAIA titles.

At the 1983 Pan American Games in Caracas, Willers claimed a silver medal, behind Cuban Genovevo Morejón.

[3] For over 30 years, Willers was a throwing coach with the Valley Royals Track & Field Club in Abbotsford.

He won Athletics Canada's Development Coach of the Year award in 2018 and trained 2024 Olympic finalist Rowan Hamilton.