Rory O'Brien (born 2 June 1989) is an Australian former professional rugby league footballer who played in the 2000s and 2010s.

Born in Sydney, New South Wales, O'Brien is of Māori and Irish descent and played his junior football for Hurstville United, before being signed by the St. George Illawarra Dragons.

In 2008, O'Brien played for the St. George Illawarra Dragons' NYC team,[2] before giving up the game in early 2009.

[6] On 26 June 2014, he signed a 2+1⁄2-year contract to return to the St. George Illawarra Dragons effective immediately.

O'Brien spent the rest of the season playing for the Wentworthville Magpies in the Intrust Super Premiership NSW.