1987–88 Primera B Nacional

A total of 22 teams competed; the champion and runner-up were promoted to Argentine Primera División.

Deportivo Mandiyú of Corrientes Province won the championship, promoting to Primera along with San Martín de Tucumán.

On the other hand, Guaraní Antonio Franco, Ferro Carril Oeste (General Pico) and Gimnasia y Esgrima de Jujuy were relegated.

The Second Promotion Playoff or Torneo Reducido was played by the teams placed 2nd to 10th in the overall standings: Quilmes (2nd), who entered in the Semifinals, Cipolletti (3rd) who entered in the Second Round, Chaco For Ever (4th), Tigre (5th), Belgrano (6th), Huracán (7th), Colón (8th), Atlético Tucumán (9th), Douglas Haig (10th); the champion of Primera B Metropolitana: Talleres (RE), San Martin (T) and Estación Quequén, both winners of Zonales Noroeste y Sureste from Torneo del Interior.

Note: San Martín de Tucumán won 3–0 on aggregate, promoting to Primera División.