Dafydd Hewitt (born 21 August 1985) is a retired Welsh rugby union player. A centre, from Llantwit Major RFC he played at every level for his local club before stepping up to regional rugby in 2004 with the Cardiff Blues. He was selected for the Wales national rugby sevens team squad in 2007. Hewitt captained Wales Under 21s at the 2006 Under 21 Rugby World Championship. Hewitt's brother Rhys plays at hooker for Bridgend Ravens.