The 1981 NBL Finals was the postseason tournament of the National Basketball League's 1981 season, which began in February.
The tournament concluded with the Launceston Casino City defeating the Nunawading Spectres in the NBL Grand Final on 28 June.
Source: NBL.com.au The NBL tie-breaker system as outlined in the NBL Rules and Regulations states that in the case of an identical win–loss record, the results in games played between the teams will determine order of seeding.
Kilda Saints chose to participate in the 1981 FIBA Club World Cup in Brazil, instead of the 1981 NBL Finals.
24-way Head-to-Head between West Adelaide Bearcats (5-1), Nunawading Spectres (3-3), Brisbane Bullets (2-4) and Newcastle Falcons (2-4).