Ronald S. Grinstead (born 25 December 1942) is a retired British international wrestler.

[1] He also represented England in the -82.5 kg division, at the 1966 British Empire and Commonwealth Games in Kingston, Jamaica.

[2][3] Four years later he won a bronze medal in the same event, at the 1970 British Commonwealth Games in Edinburgh, Scotland.

He then competed in a third consecutive Games when he appeared at the 1974 British Commonwealth Games, in Christchurch, New Zealand.

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