1998 Primera B de Chile
| Season | 1998 |
|---|---|
| Champions | Cobresal |
| Promoted | Cobresal O'Higgins Santiago Morning |
| Relegated | Deportes Colchagua |
← 1997–C 1999 → | |
The 1998 Primera B de Chile was the 48th completed season of the Primera B de Chile.
Cobresal was tournament’s champion and was promoted to 1999 Primera División de Chile alongside O'Higgins and Santiago Morning, which achieved the promotion in the Promotion Playoffs.