The 1947 New South Wales Rugby Football League premiership was the 40th season of Sydney's top-level rugby league football competition, Australia's first. The addition of two teams, Manly-Warringah and Parramatta, saw ten teams from across the city contest during the 1947 premiership, the first expansion of the League since Canterbury's introduction in  1935. The season culminated in a grand final between the Balmain and Canterbury-Bankstown clubs.