1973 Primera División de Chile
| Dates | 15 April 1973 – 23 February 1974 |
|---|---|
| Champions | Unión Española (3rd title) |
| Relegated | Universidad Católica |
| 1974 Copa Libertadores | Unión Española Colo-Colo |
| Matches played | 306 |
| Goals scored | 857 (2.8 per match) |
| Top goalscorer | Guillermo Yávar (21 goals) |
| Biggest home win | Unión Española 6–0 Antofagasta Portuario (17 February 1974) |
| Highest attendance | 63,185 Colo-Colo 3–2 Palestino (24 June) |
| Total attendance | 2,031,819 |
| Average attendance | 6,750 |
← 1972 1974 → | |
The 1973 Campeonato Nacional was Chilean first tier's 41st season. Unión Española was the tournament's champion.