Multiplex is an international construction contractor founded in Australia and currently headquartered in London, England. Operating in Australia, Canada, Europe and the Middle East, the company specializes in high-rise buildings, studio, high-end residential, mixed-use, education, health and civil infrastructure developments.

Stadium Australia is a multi-purpose stadium located in Sydney Olympic Park, a suburb of Sydney, New South Wales, Australia. The stadium, which is sometimes referred to as Sydney Olympic Stadium, Homebush Stadium or simply the Olympic Stadium, was completed in March 1999 at a cost of A$690 million to host the 2000 Summer Olympics. The Stadium was leased by a private company, the Stadium Australia Group, until the Stadium was sold back to the NSW Government on 1 June 2016 after NSW Premier Michael Baird announced the Stadium was to be redeveloped as a world-class rectangular stadium. The Stadium is owned by Venues NSW on behalf of the NSW Government.