Lyndon Mustoe (born 30 January 1969) was a Welsh rugby union prop who was selected for the Wales national team on ten occasions during the 1990s. Mustoe represented several Welsh club sides throughout his playing career, including Chepstow, Newport, Pontypool, Cardiff and Bridgend. In 1996 he was part of the Cardiff team that lost against Toulouse in the first Heineken Cup final.