The 1997–98 Premiership 1 was the eleventh season of the top tier of the English rugby union league system, currently known as Premiership Rugby, and the first to be sponsored by Allied Dunbar, having previously been sponsored by Courage Brewery. The end of the previous season had seen a wide scale restructuring of the old league system, with the two leagues being renamed as Premiership 1 and Premiership 2, with Allied Dunbar agreeing to sponsor the top two divisions for £7,500,000. Wasps were defending champions and Richmond and Newcastle Falcons the promoted sides.