Byron Idris Hayward (born 22 May 1969) is a former international rugby union full back who played for Wales and Wales A. He had an impressive debut for Wales scoring three tries in his first international match against Zimbabwe. Hayward caused controversy in 2000 by refusing to play against Scotland A in Bridgend because of the inclusion of foreign players Shane Howarth and Brett Sinkinson. This was in the heat of the Grannygate scandal, both players claimed to have Welsh grandparents that would later be found to be false.