Rugby league in Australia has been one of Australia's most popular sports since it started being played there in 1908. It is the dominant winter football code in the states of New South Wales and Queensland. In 2022, it was the most watched sport on Australian television with an aggregate audience of 137.3 million viewers. The premier club competition is the National Rugby League (NRL), which features ten teams from New South Wales, four teams from Queensland, and one team each from Victoria, the Australian Capital Territory and New Zealand. The premier representative competition is the annual Rugby league State of Origin featuring two sides, the New South Wales Blues and the Queensland Maroons is often referred to as "Australian sport's greatest rivalry", it is one of Australia's premier sporting events, attracting huge interest and television audiences.

The State of Origin series is an annual best-of-three rugby league series between two Australian state representative sides, the New South Wales Blues and the Queensland Maroons.