The 1998 NBL season was the 20th season of competition since its establishment in 1979. A total of 11 teams contest the league. This season marked the NBL's final winter season. The Illawarra Hawks were renamed the Wollongong Hawks.
The 1998 regular season took place over 19 rounds between 30 January 1998 and 9 June 1998.
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The NBL tie-breaker system as outlined in the NBL Rules and Regulations states that in the case of an identical winâÂÂloss record, the results in games played between the teams will determine order of seeding.
<small><sup>1</sup>Brisbane Bullets won Head-to-Head (2-1). </small>
<small><sup>2</sup>Wollongong Hawks won Head-to-Head (2-1). </small>
<small><sup>3</sup>North Melbourne Giants won Head-to-Head (2-1). </small>
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