O Clássico
| Location | Portugal |
|---|---|
| Teams | Benfica Porto |
| First meeting | 28 April 1912 Friendly Porto 2–8 Benfica |
| Latest meeting | 6 April 2025 Primeira Liga Porto 1–4 Benfica |
| Stadiums | Estádio da Luz (Benfica) Estádio do Dragão (Porto) |
| Statistics | |
| Meetings total | 257 |
| Most wins | Benfica (93) |
| Most player appearances | Nené (44) |
| Top scorer | José Águas (18) |
| All-time series | Benfica: 93 Drawn: 62 Porto: 102 |
| Largest victory | Benfica 12–2 Porto 7 February 1943 (Primeira Divisão) |
| Longest win streak | 4 matches (both clubs) |
O Clássico (lit. 'The Classic') is the name given in football to matches between Portuguese clubs S.L. Benfica and FC Porto. Originally, the term O Clássico only referred to games played in the league, but now tends to include matches that take place in other domestic competitions such as the Taça de Portugal, Taça da Liga and Supertaça Cândido de Oliveira. Despite being the two most decorated Portuguese clubs in European football, with seven European trophies between them, they have never faced each other in a European competition. Benfica and Porto are two of the three clubs known as the "Big Three" in Portugal, the other being Sporting CP.
The rivalry comes about as Lisbon and Porto are the two largest cities in Portugal, and both clubs are the most decorated football teams in Portugal.