1986–87 Primera B Nacional

A total of 22 teams competed, with the champion and runner-up being promoted to Primera División.

Deportivo Armenio won the championship, promoting to Primera along with Banfield (winner of "Torneo Octogonal").

[1] On the other hand, Central Norte (Salta), Atlético Concepción (Banda del Río Salí, Tucumán), and Unión of Villa Krause (San Juan) were relegated to Primera B Metropolitana.

Note: Clubs with indirect affiliation with AFA are relegated to their respective league of his province according to the Argentine football league system, while clubs directly affiliated face relegation to Primera B Metropolitana.

Chacarita Juniors, Gimnasia y Esgrima (J) and Central Norte were tied in points, they had to play a tiebreaker triangular in a neutral field to see which team was relegated.