The 1919 Copa Aldao was the final match to decide the winner of the Copa Aldao, the 5th. edition of the international competition organised by the Argentine and Uruguayan Associations together. The final was contested by Uruguayan Nacional and Argentine Boca Juniors. In the match, played at Estadio Gran Parque Central in Montevideo on May 16, 1920, Nacional beat Boca Juniors 3–0, winning its second Copa Aldao trophy.