Brett Stewart is an Australian former professional rugby league footballer who played for the Manly-Warringah Sea Eagles in the National Rugby League (NRL). An Australian international and New South Wales State of Origin representative fullback, he played his entire NRL career for the Sea Eagles, with whom he won the 2008 and 2011 Premierships.

The Manly Warringah Sea Eagles are an Australian professional rugby league club based in Sydney's Northern Beaches. They compete in Australia's premier rugby league competition, the National Rugby League (NRL). The club debuted in the 1947 New South Wales Rugby Football League season and currently host the majority of their home games from Brookvale Oval in Brookvale, while training at the New South Wales Academy of Sport in Narrabeen and their Centre of Excellence in Brookvale. The team colours are maroon and white, and are commonly known as Manly or the Sea Eagles.