| Competition: | Primera B de Chile |
| Season: | 2006 |
| Winners: | Deportes Melipilla |
| Promoted: | Deportes Melipilla Deportes Concepción |
| League Topscorer: | Claudio Videla (18) |
| Prevseason: | 2003 |
| Nextseason: | 2005 |
The 2004 Primera B de Chile was the 54th completed season of the Primera B de Chile.
Deportes Melipilla was the tournament's champions.[1]