William Massey (10 September 1936 – 2 July 2020) was a New Zealand softball pitcher, coach and umpire. He played at two world championships, winning bronze with the New Zealand team in 1966. Playing for the Railways club in the Hutt Valley, Massey pitched his team to six national interclub titles between 1958 and 1967. During the same period he won eight national interprovincial titles representing Hutt Valley. Known as "the man with the golden arm", he dominated batters with his speed and movement. He represented New Zealand at the first two men's world championship softball tournaments, at Mexico City in 1966 and Oklahoma City in , with his team placing third in 1966. He retired as a player after the 1968 tournament, but went on to coach the Railways club and mentor women's pitcher Gina