| 1998–99 WNBL season | |
|---|---|
| League | Women's National Basketball League |
| Sport | Basketball |
| Duration | October 1998 – February 1999 |
| Number of teams | 8 |
| TV partner(s) | ABC |
| Regular season | |
| Top seed | AIS |
| Season MVP | Lauren Jackson ( AIS) |
| Top scorer | Lauren Jackson ( AIS) |
| Finals | |
| Champions | AIS |
| Runners-up | Perth Breakers |
| Finals MVP | Kristen Veal ( AIS) |
The 1998–99 WNBL season was the 19th season of competition since its establishment in 1981. A total of 8 teams contested the league.
Team standings
| # | WNBL Championship Ladder | |||||
|---|---|---|---|---|---|---|
| Team | W | L | PCT | GP | ||
| 1 | AIS | 16 | 5 | 76.0 | 21 | |
| 2 | Perth Breakers | 14 | 7 | 67.0 | 21 | |
| 3 | Adelaide Lightning | 12 | 9 | 57.0 | 21 | |
| 4 | Melbourne Tigers | 11 | 10 | 52.0 | 21 | |
| 5 | Bulleen Boomers | 11 | 10 | 52.0 | 21 | |
| 6 | Sydney Flames | 10 | 11 | 48.0 | 21 | |
| 7 | Dandenong Rangers | 6 | 15 | 29.0 | 21 | |
| 8 | Canberra Capitals | 4 | 17 | 19.00 | 21 | |
Finals
| Semifinals | Preliminary final | Grand final | |||||||||||
| AIS | 81 | AIS | 88 | ||||||||||
| Perth Breakers | 62 | Perth Breakers | 79 | ||||||||||
| Perth Breakers | 67 | ||||||||||||
| Adelaide Lightning | 46 | ||||||||||||
| Adelaide Lightning | 63 | ||||||||||||
| Melbourne Tigers | 54 | ||||||||||||
Season award winners
Statistics leaders
| Category | Player | Team | GP | Totals | Average |
|---|---|---|---|---|---|
| Points Per Game | Lauren Jackson | AIS | 20 | 463 | 23.2 |
| Rebounds Per Game | Lauren Jackson | AIS | 20 | 238 | 4.1 |
| Assists Per Game | Kristen Veal | AIS | 17 | 112 | 6.6 |
| Steals Per Game | Tully Bevilaqua | Perth Breakers | 20 | 48 | 2.4 |
| Blocks per game | Jenny Whittle | Perth Breakers | 21 | 53 | 2.5 |
| Field Goal % | Lauren Jackson | AIS | 20 | (192/355) | 54.1% |
| Three-Point Field Goal % | Rohanee Cox | Perth Breakers | 21 | (13/31) | 41.9% |
| Free Throw % | Shelley Sandie | Canberra Capitals | 21 | (72/86) | 83.7% |