John Peter Rhys Williams MBE FRCS (born 2 March 1949) is a former rugby union footballer who represented Wales in international rugby during their Golden Era in the 1970s. He was known universally as J.P.R. Williams (or sometimes just as JPR, to distinguish him from teammate J. J. Williams, also John). Playing in the position of fullback, he was noted for his aggressive attacking style. With his long sideburns and socks around his ankles, "JPR" was an iconic figure on the legendary 1970s Wales team.