Clive Ronald Griffiths (born 2 April 1954), also known by the nickname of "Griff", is a Welsh former dual-code international rugby union and professional rugby league footballer who played in the 1970s and 1980s, and coached rugby union and rugby league in the 1990s, 2000s and 2010s. He played representative level rugby union (RU) for Wales, at invitational level for the Barbarian F.C., and at club level for Llanelli RFC, as a full-back, and representative level rugby league (RL) for Wales, and at club level for St. Helens and Salford, as a fullback, wing or centre, and coached representative level rugby union (RU) for Wales (Defence Coach), and at club level for Newcastle Emlyn RFC, London Welsh RFC (Assistant Coach), Swansea RFC (Assistant Coach), Newport Gwent Dragons (Assistant Coach),