Greg J. Chalmers (born 11 October 1973) is an Australian professional golfer who has played on both the European Tour and the PGA Tour.Chalmers was born in Sydney. He won the 1993 Australian Amateur and the 1994 French Amateur.Chalmers turned professional in 1995 and made a strong start to his professional career, winning four times in Australia in the next few years, including the 1998 Australian Open.