Robert Edward O'Reilly (born 16 February 1949) is an Australian former professional rugby league footballer who played in the 1960s, 1970s and 1980s.
An Australian international and New South Wales interstate representative prop forward, he played in the New South Wales Rugby League premiership, mainly for the Parramatta Eels, but also for the Eastern Suburbs Roosters and Penrith Panthers.
Nicknamed 'The Bear', O'Reilly enjoyed a fifteen-year Sydney first grade career debuting for Parramatta at aged eighteen in 1967 and returning to the club in 1981 to first taste premiership success.
[3] A decade after his first representative appearance, O'Reilly was part of Parramatta's first ever premiership-winning team of 1981.
He held the record for highest number of first grade games at 284[4] until overtaken by Geoff Gerard.