Simon Gillies is an Australian former professional rugby league footballer who played in the 1980s and 1990s.
An Australia national and New South Wales state representative forward, he played his club football in Sydney for the Canterbury-Bankstown Bulldogs (with whom he won the 1995 ARL Premiership), as well as in England for the Warrington Wolves.
Gillies was not selected in Canterbury's 1988 grand final team which defeated Balmain in the decider.
In 1993, Gillies played from the bench in Canterbury's preliminary final loss against eventual premiers the Brisbane Broncos.
Gillies was selected to play for Canterbury-Bankstown from the reserve bench in their 1994 Grand Final loss to the Canberra Raiders.