1998–99 NBL season

The 1998–99 NBL season was the 21st season of competition since its establishment in 1979. A total of 11 teams contested the league. This season marked the first summer season for the NBL. The Townsville Suns were renamed the Townsville Crocodiles

Regular season
The 1998–99 regular season took place over 23 rounds between 9 October 1998 and 14 March 1999.

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 12
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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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Round 23
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Ladder
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.

''1Wollongong Hawks won Head-to-Head (2-0). ''

''2Brisbane Bullets won Head-to-Head (2-1). ''

''3Townsville Crocodiles won Head-to-Head (2-1). ''

''4Sydney Kings won Head-to-Head (2-1). ''

Qualifying Finals
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Semi-finals
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Grand Final
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NBL awards

 * Most Valuable Player: Steve Woodberry, Brisbane Bullets
 * Most Valuable Player Grand Final: Brett Maher, Adelaide 36ers
 * Rookie of the Year: Damien Ryan, Canberra Cannons
 * Best Defensive Player: Darnell Mee, Adelaide 36ers
 * Best Sixth Man: Bruce Bolden, West Sydney Razorbacks
 * Most Improved Player: C.J. Bruton, Wollongong Hawks
 * Coach of the Year: Lindsay Gaze, Melbourne Tigers & Brendan Joyce, Wollongong Hawks