1989 NBL season

The 1989 NBL season was the 11th season of competition since its establishment in 1979. A total of 13 teams contest the league.

Regular season
The 1989 regular season took place over 22 rounds between 20 April 1989 and 16 September 1989.

Round 1
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Round 2
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Round 3
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Round 4
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Round 5
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Round 6
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Round 7
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Round 8
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Round 9
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Round 10
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Round 11
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Round 13
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Round 14
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Round 15
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Round 16
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Round 17
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Round 18
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Round 19
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Round 20
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Round 21
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Round 22
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Ladder
This is the ladder at the end of season, before the finals. The top 6 teams qualified for the finals series.

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.

''1Perth Wildcats won Head-to-Head (2-0). ''

''2Head-to-Head between Sydney Kings and Adelaide 36ers (1-1). Sydney Kings won For and Against (+7).''

''3Head-to-Head between Westside Saints and Hobart Tassie Devils (1-1). Westside Saints won For and Against (+5).''

Playoff bracket
There were two best of three Elimination finals, four best of three Semifinals, and then best of three grand final series.

Elimination Finals
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Semifinals
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Grand Final
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NBL awards

 * Most Valuable Player: Scott Fisher, North Melbourne Giants
 * Most Valuable Player Grand Final: Scott Fisher, North Melbourne Giants
 * Best Defensive Player: Phil Smyth, Canberra Cannons
 * Most Improved Player: Mark Bradtke, Adelaide 36ers
 * Rookie of the Year: Justin Withers, Illawarra Hawks
 * Coach of the Year: Lindsay Gaze, Melbourne Tigers