Juan Guillermo Brunetta (born August 25, 1975, in Laboulaye, Córdoba) is an Argentine professional racing cyclist. He is most famous for his unusual size for a cyclist. He is 2.04 metres (6 ft 8 in) and 97 kilograms (214 lb). Like most cyclists out of Córdoba, he started off as a track rider but has made the transition to the road and does not race as much on the track these days. He has been one of the best time trialists for the last 6 years in Argentina, but he has raced most of his road career in Uruguay with the Villa Teresa team with much success, especially in the time trials. He competed in the men's team pursuit at the 2000 Summer Olympics. Since 2007 he has been racing in Argentina again.