Nereu de Oliveira Ramos was a Brazilian political figure. He briefly served as interim president of Brazil in the aftermath of the political crisis which culminated in the suicide of President Getúlio Vargas and the impeachment of Deputy Carlos Luz and President Café Filho.

The president of Brazil, officially the president of the Federative Republic of Brazil or simply the President of the Republic, is the head of state and head of government of Brazil. The president leads the executive branch of the federal government and is the commander-in-chief of the Brazilian Armed Forces.