1957 Copa Aldao

The 1957 Copa Aldao was the final match to decide the winner of the Copa Aldao, the 18th edition of the international competition organised by the Argentine and Uruguayan Associations together. The final (held ten years after than its previous edition) was contested by Uruguayan club Nacional and Argentine side River Plate.

In the first match, played at Estadio Centenario in Montevideo, River Plate won 2–1 but the second leg, to be held in Buenos Aires, was never played. As the associations did not decide about the issue, no title was awarded.

Qualified teams

 * Bold indicates winning years

Second leg
As the second leg was never held, no champion was proclaimed.