| Competition: | Campeonato Nacional 1975 |
| Dates: | 12 April 1975 – 11 January 1976 |
| Winners: | Unión Española (4th title) |
| Relegated: | O'Higgins Magallanes |
| Matches: | 307 |
| Total Goals: | 932 |
| Continentalcup1: | 1976 Copa Libertadores |
| Continentalcup1 Qualifiers: | Unión Española Palestino |
| League Topscorer: | Víctor Pizarro (27 goals) |
| Highest Attendance: | 37,434 |
| Attendance: | 1,295,932 |
| Average Attendance: | 4,249 |
| Prevseason: | 1974 |
| Nextseason: | 1976 |
The 1975 Campeonato Nacional de Futbol Profesional was Chilean top tier's 43rd season. Unión Española was the tournament's champion, winning its fourth title.[1]
| Magallanes | 0–1 | Aviación |
|---|
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