The 2018 Intrust Super Premiership NSW season was the tenth season of the New South Wales Cup, the top rugby league competition administered by the New South Wales Rugby League.

The competition acts as a second-tier league to the ten New South Wales-based National Rugby League clubs, as well the Canberra Raiders and New Zealand Warriors.

The Penrith Panthers were the defending champions, following their 20-12 victory against the Wyong Roos in the 2017 Grand Final.

Illawarra RLFC were renamed to the St George Illawarra Dragons to bring the club in line with the NRL’s ‘whole of game’ strategy, that will also see top-grade squads increased from 25 players to 30.

As premiers of the NSW Cup, the Cannterbury-Bankstown Bulldogs faced Queensland Cup premiers Redcliffe Dolphins in the NRL State Championship match.Fox League will continue to broadcast a game per round, however Channel 9 will also be broadcasting a game per round starting with the 2018 for the first time.