Sport Club Internacional (Portuguese pronunciation: [
)te~nPsjonaw]), commonly known as Internacional, or Internacional de Porto Alegre or simply Inter, is a Brazilian professional football club based in Porto Alegre.

[panainaikos]), known as Panathinaikos, or by its full name, and the name of its parent sports club, Panathinaikos A.O. or PAO (  ; Panathinaks Athlitiks milos, "All-Athenian Athletic Club"), is a Greek professional football club based in Athens, Greece.

Flamengo's fiercest and longest-standing rivalries are with the other "Big Four" of Rio de Janeiro: Fluminense, Botafogo and Vasco da Gama; as well as interstate rivalries with Atletico MG and Palmeiras.

The Clssico dos Milhes (English: Classic of Millions) is the name given to Flamengo and Vasco da Gama association football derby, both teams from the city of Rio de Janeiro, Brazil. Considered as one of the most fiercely contested derbies in Brazilian football, both in historic rivalry and in popularity.