The club was established in 1908, making it one of the original founding members of the New South Wales Rugby Football League, and one of Australia's first rugby league football clubs. North Sydney continued competing with some success in the first half of the 20th century in the NSWRL, and through the ARL and NRL premierships until they merged with Manly-Warringah Sea Eagles to form the Northern Eagles for the 2000 season. The merged club lasted only until 2002 when it split again, with the Bears not returning to first grade and being represented at the highest order in the NSWRL competition the second-tier rugby league competition, where they continue to play today.