| 1998 WNBL season | |
|---|---|
| League | Women's National Basketball League (WNBL) |
| Sport | Basketball |
| Number of teams | 9 |
| TV partner(s) | ABC |
| Regular season | |
| Top seed | Sydney Flames |
| Season MVP | Michelle Griffiths (Sydney Flames) |
| Top scorer | Allison Cook (Bulleen Boomers) |
| Finals | |
| Champions | Adelaide Lightning |
| Runners-up | Sydney Flames |
| Finals MVP | Jo Hill (Adelaide Lightning) |
The 1998 WNBL season was the 18th season of competition since its establishment in 1981. A total of 9 teams contested the league.