| Competition: | Primeira Liga |
| Season: | 1956–57 |
| Winners: | Benfica 9th title |
| Relegated: | Covilhã Atlético |
| Continentalcup1: | European Cup |
| Continentalcup1 Qualifiers: | Benfica |
| Matches: | 182 |
| Total Goals: | 681 |
| Prevseason: | 1955–56 |
| Nextseason: | 1957–58 |
The 1956–57 Primeira Divisão was the 23rd season of top-tier football in Portugal.
It was contested by 14 teams, and S.L. Benfica won the championship.