The 2013 NBL season was the 32nd season of the National Basketball League. The 2013 season saw the withdrawal of the Auckland Pirates and Harbour Heat, but saw the return of the Waikato Pistons after a one-year hiatus as well as the Super City Rangers, who returned to the league for the first time since 1995. The 2013 NBL Final Four saw the top four teams play off on Saturday 13 July in a semifinals round, with the winner of each game playing in the final on Sunday 14 July at Pettigrew Green Arena in Napier.