| RFL Division One | |
|---|---|
| League | Rugby Football League Division One |
| Duration | 30 Rounds |
| Teams | 11 |
| 1998 Season | |
| Grand Final winners |  Wakefield Trinity |
| League leaders | Wakefield Trinity |
| Tom Bergin Trophy |  Richard Chapman |
The 1998 Division One Championship season was the second tier of British rugby league during the 1998 season. The competition featured eleven teams, with Wakefield Trinity winning the league and the inaugural Grand Final.