The 1984 NBL Finals was the postseason tournament of the National Basketball League's 1984 season, which began in February.
The tournament concluded with the Canberra Cannons defeating the Brisbane Bullets in the NBL Grand Final on 1 July.
The finals were contested between the top four teams of the regular season in each division, with the final four weekend split between the AIS Arena and The Glass House.
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.
The top four teams in each division competed in a 1v2/3v4 elimination finals fixture between 22 June and 23 June, with the loser of 1v2 playing the winner of 3v4 for a spot in the Semifinals, while the winner of 1v2 qualified through to the Semifinals as well.