| Competition: | Segunda División |
| Season: | 1975 |
| Winners: | Universidad Católica |
| Promoted: | Universidad Católica |
| Relegated: | Deportes Colchagua |
| Prevseason: | 1974 |
| Nextseason: | 1976 |
The 1975 Segunda División de Chile was the 24th season of the Segunda División de Chile.
Universidad Católica was the tournament's champion.[1]