The 1980–81 Rotary Watches National Basketball League season was the ninth season of the National Basketball League.[1]
The league was sponsored by Rotary Watches for the third consecutive year and Birmingham Team Fiat broke the Crystal Palace monopoly by taking the league title. Sunderland provided a major shock when securing the Play Offs title. Palace, who were expected to make a clean sweep of silverware, gained some consolation by winning the National Cup.[2]
Coventry Team Fiat were rebranded Birmingham and moved to a larger venue at the Aston Villa Leisure Centre which served as a catalyst for their success. Manchester took on the name Trafford for the season but apart from this the teams remained the same. A team called Solent Stars backed by a millionaire businessman called Harry Smith [3] easily won the second division and competed successfully against first division teams in tournaments.[4]