Guy Williams (born 11 July 1971) is a British showjumper, ranked number four in Great Britain as of July 2011, part of the GBR equestrian team, and winner of a number of prestigious titles including the British Jumping Derby in 2010.
Guy was also part of the bronze medal-winning team in Madrid in 2011.
His daughter, Maisy Williams, also competes in show jumping, including puissance.