Harry Prowell A.A. (10 July 1936 – 27 June 2000) was a Guyanese long distance runner who represented Guyana in the Marathon at the 1968 Summer Olympics in Mexico City, Mexico. He is known to be one of the greatest Marathon runners Guyana has ever produced, setting the national record in 1968. To date, he is the only Guyanese ever to compete in the Marathon at the Summer Olympic Games and one of the most prominent Indo-Caribbean long distance runners of his time. He also participated in the 10,000 metres at the 1967 Pan American Games in Winnipeg, Manitoba, Canada and represented Guyana at the 1970 British Commonwealth Games in Edinburgh, Scotland competing in the 5000m Athletics at the 1970 British Commonwealth Games – Men's 5000 metres 10,000m Athletics at the 1970 British Commonwealth Ga