The Cronulla-Sutherland Sharks are an Australian professional rugby league club based in Cronulla, in the Sutherland Shire, Southern Sydney, New South Wales. The Cronulla Sharks compete in the National Rugby League (NRL), Australasia's premier rugby league competition. The Sharks, as they are commonly known, were admitted to the New South Wales Rugby League premiership, predecessor of the Australian Rugby League and the current National Rugby League competition, in January 1967. The club competed in every premiership season since then and, during the Super League war, joined the rebel competition before continuing on in the re-united NRL Premiership. The Sharks have been in competition for 56 years, appearing in four grand finals, winning their first premiership in 2016 after defeating the Melbourne Storm at Stadium Australia.

Cronulla is a suburb of Sydney, in the state of New South Wales, Australia. Boasting numerous surf beaches and swimming spots, the suburb attracts both tourists and Greater Sydney residents. Cronulla is 26 kilometres south of the Sydney central business district, in the local government area of the Sutherland Shire.