Mitchell "Mitch" Aubusson (born 1 October 1987 in Sydney, New South Wales, Australia) is a professional rugby league footballer for the Sydney Roosters in the Australian National Rugby League (NRL) competition. Aubusson primarily plays at Second Row but is also capable of playing in the centres. Aubusson made his debut in Round 1 of the 2007 Season vs. South Sydney Rabbitohs at five-eighth.
While attending Ballina Xavier College, Aubusson played for the Australian Schoolboys team in 2005.
He is the younger brother of James Aubusson, who also played for the Sydney Roosters.
Aubusson played in the 2010 Grand Final against St. George Illawarra scoring a try in the Roosters 32-8 lost.
Aubusson played in the 2013 Grand Final from the interchange.