| Season: | 1945–46 |
| Winners: | CF Os Belenenses 1st title |
| Matches: | 132 |
| Total Goals: | 638 |
| Nextseason: | 1946–47 |
Statistics of Portuguese Liga in the 1945–46 season.
It was contested by 12 teams, and C.F. Os Belenenses won the championship, the first time that the competition had been won by a team outside the Portuguese "Big Three" (Os Três Grandes) of Benfica, Porto and Sporting.