The 1934–35 Campeonato da Liga season was the first season of top-tier football in Portugal. Although that, the most important national competition (in a knock-out cup format) was still called Portuguese Championship, until 1938, the competition was considered not very competitive with a reduced number of matches played by each team. So a new competition, in round-robin format was created ind 1934, with 8 clubs. Although at time the winner of the Portuguese Championship was considered the National Champion, later, the winner of Campeonato da Liga 1934–35 would be considered the first National Champion.
|Goals scored||258 (4.61 per match)|
|Biggest home win||Porto 7-0 Académico do Porto|
Belenenses 7-0 Académico do Porto
|Biggest away win||Académica de Coimbra 0-6 Sporting CP|
|Highest scoring||Porto 7-4 União Lisboa|
For the tournament, there were invited 8 clubs from the 4 major Portuguese District Football Associations: 4 teams from Lisbon FA, 2 from Porto FA, 1 from Setúbal FA and 1 from Coimbra FA. F.C. Porto won the championship. There were no relegations or promotions, since qualification was based on the results of the Regional Championships.
|5||Vitória de Setúbal||14||7||2||5||26||24||+2||16|
- "O FC Porto venceria o jogo após prolongamento (3x1), sagrando-se o primeiro campeão de Portugal". zerozero,pt. 20 December 2018. Retrieved 24 February 2020.
- "Portuguese FA confirms Sporting has only 18 national titles". observador,pt. 16 December 2016. Retrieved 1 March 2017.
- Pesquisa – Jornal Record