Barry George Clegg (born 30 October 1951) is a Welsh former rugby union international.
Born in Cymmer, Clegg was a lock who played mostly for Swansea and Neath during his career.
Clegg had been around the Wales team for several years before earning his solitary cap. On a 1975 tour of Asia, he and future Wales coach Gareth Jenkins made their Wales debuts in a match against Japan, but this was not a full international. He was also on the 1978 tour of Australia. It was an injury to Clegg's then Swansea teammate Geoff Wheel that allowed him to gain a Wales cap in the 1979 Five Nations match against France at the Parc des Princes.