| 2018–19 NBL season | |
| League: | National Basketball League |
| Season: | 2018–19 |
| Season Champs: | Perth Wildcats |
| Runners Up: | Melbourne United |
| Semifinalists: | Sydney Kings Brisbane Bullets |
| Regular Season: | Regular season |
| Regular Season Link: | 2018–19 NBL regular season |
| Finals: | Finals |
| Finals Link: | 2019 NBL Finals |
| Teams: | 8 |
| Dates: | 11 October 2018 – 17 March 2019 |
| Tv: | Australia: New Zealand: Online: |
| Mvp Link: | NBL Most Valuable Player Award |
| Finals Mvp Link: | NBL Grand Final Most Valuable Player |
| Epg: | 67% |
| Top Scorer Link: | List of National Basketball League (Australia) annual scoring leaders |
| Ppg: | 22.5 |
| Rpg: | 11.6 |
| Apg: | 5.2 |
| Attendance: | 793,782 |
| Average Attendance: | 6,615 |
| Seasonslist: | List of NBL seasons |
| Seasonslistnames: | NBL |
| Prevseason Link: | 2017–18 NBL season |
| Prevseason Year: | 2017–18 |
| Nextseason Link: | 2019–20 NBL season |
| Nextseason Year: | 2019–20 |
| Updated: | 17 March 2019 |
The 2018–19 NBL season was the 41st season of the National Basketball League since its establishment in 1979. A total of eight teams have contested the league. The regular season had been played between October 2018 and February 2019, followed by a post-season featuring the top four in March 2019.
Australian broadcast rights to the season are held by Fox Sports, in the fourth year of a five-year deal, with two game per week simulcast on the Nine Network. In New Zealand, Sky Sport are the official league broadcaster.
As Australia and New Zealand are participating in 2019 FIBA Basketball World Cup qualification, the league will take a break during the FIBA international windows of 26 November to 4 December 2018 and 18–26 February 2019.
The Perth Wildcats won their ninth NBL championship after defeating Melbourne United in the Grand Final.
See main article: 2018 NBL pre-season. The pre-season featured games in China and Malaysia. As well, it featured the NBLxNBA 2018 Tour in which five NBL teams played a total of seven games. Five NBL teams played a total of seven games against NBA teams in the 2018 pre-season.[1]
See main article: 2018–19 NBL regular season. The regular season started on 11 October 2018 and finished on 17 February 2019. Eight teams participated, with the top four advancing to 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 overall points percentage between the teams will determine order of seeding.
1Perth Wildcats won on overall points percentage. Melbourne United finished 2nd on overall points percentage.
2Brisbane Bullets won on overall points percentage.
3New Zealand Breakers won on overall points percentage.
See main article: 2019 NBL Finals. The 2019 NBL Finals were played in February and March 2019, consisting of two best-of-three semi-final series and the best-of-five Grand Final series. In the semi-finals, the higher seed hosts the first and third games. In the Grand Final, the higher seed hosts the first, third and fifth games.
After winning both of their semi-finals in straight games, the Perth Wildcats and Melbourne United progressed to the Grand Final where the Wildcats triumphed 3–1.[2]