| Competition: | Campeonato Nacional 1977 |
| Dates: | 16 April 1977 – 18 December 1977 |
| Winners: | Unión Española (5th title) |
| Relegated: | Regional Antofagasta Deportes Ovalle Santiago Wanderers (Promotion Lig.) |
| Matches: | 307 |
| Total Goals: | 860 |
| Continentalcup1: | 1978 Copa Libertadores |
| Continentalcup1 Qualifiers: | Unión Española Palestino |
| League Topscorer: | Oscar Fabbiani (34 goals) |
| Biggest Home Win: | |
| Highest Attendance: | 54,336 |
| Attendance: | 1,970,085 |
| Average Attendance: | 6,417 |
| Prevseason: | 1976 |
| Nextseason: | 1978 |
The 1977 Campeonato Nacional de Fútbol Profesional was first tier's 45th season. Unión Española was the tournament's champion, winning its fifth title.[1]
Deportes Ovalle relegated to Segunda División
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