The 2004 NRL season (also known as the 2004 Telstra Premiership due to sponsorship from Telstra) was the 97th season of professional rugby league football in Australia, and the seventh run by the National Rugby League. Fifteen clubs competed during the regular season before the top eight finishing teams contested the finals series. The Canterbury-Bankstown Bulldogs defeated the Sydney Roosters in the 2004 NRL grand final and in doing so claimed their eighth premiership.