William de Gruchy (born 10 May 1930) is an Australian former athlete who specialised in sprinting.
A Western Australian athlete, de Gruchy was raised in the Perth suburb of Mount Hawthorn.[1]
De Gruchy studied at both St Patrick's Boys' School and Aquinas College in Perth.[1]
In 1950, de Gruchy represented Australia at the British Empire Games in Auckland, where he won a silver medal in the 100 yard sprint and was a member of the gold medal-winning team.[2]
De Gruchy won the national 100 yard sprint title for the only time in 1951, edging three-time champion John Treloar.[3] He was overlooked in favour of John Treloar for the 1952 Helsinki Olympics.[4]
At the 1952 WA state championships, de Gruchy ran the 100 yard sprint in a wind assisted 9.6 seconds.[5]