1981 Campeonato Nacional finals

The 1981 Campeonato Nacional finals were the final matches of the 1981 Campeonato Nacional, the second of the two league championships held during the 90th season of Argentine football. The two-legged event was contested between River Plate and Ferro Carril Oeste. The first leg was played at the Estadio Monumental, Buenos Aires on 16 December 1981 and the second leg was played on 20 December 1981 at the Estadio Arquitecto Ricardo Etcheverri, Buenos Aires.

Each club needed to progress through the group stage and two knockout rounds to reach the final, playing 18 matches in total. Both finalists landed in the same group. Ferro Carril Oeste topped the group before beating Gimnasia y Esgrima (J) and Vélez Sarsfield to reach the final. River Plate finished second and subsequently beat Rosario Central and Independiente to progress to the final.^[2]