David "Dai" Young (born 26 July 1967) is a Welsh rugby union coach and former rugby union and rugby league footballer. He was recently Director of Rugby at Premiership Rugby club Wasps but departed the club after initially stepping down from first team coaching in February 2020. He is now Director of Rugby at Cardiff Rugby. A prop, he won 51 caps for Wales in rugby union between 1987 and 2002, three caps for the British & Irish Lions, and 14 caps for Wales in rugby league.