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. It was Boca Juniors and Cruzeiro 2nd Copa Libertadores finals.