The 1977 Copa Libertadores Finals was the final two-legged tie to determine the 1977 Copa Libertadores champion. It was contested by Argentine club Boca Juniors and Brazilian club Cruzeiro. The first leg of the tie was played on 6 September at Boca Juniors' home field, La Bombonera, while the second leg was played on 11 September at Cruzeiro's venue, Estadio Mineirão.