| Competition: | Primera B de Chile |
| Season: | 2009 Primera B |
| Winners: | Unión San Felipe |
| Prevseason: | 2009-A |
| Nextseason: | 2010 |
The 2009 Torneo Clausura was part of the 59th completed season of the Primera B de Chile.
San Luis de Quillota was tournament's champion.[1]