The 1991 Segunda División B play-offs were the final playoffs for the promotion from
1990–91 Segunda División B to
1991–92 Segunda División. The first four teams in each group took part in the play-off. The teams played a league of four teams, divided into 4 groups. The champion of each group promoted to
Segunda División.
The 1991 Segunda División B play-offs were the final playoffs for the promotion from
1990–91 Segunda División B to
1991–92 Segunda División. The first four teams in each group took part in the play-off. The teams played a league of four teams, divided into 4 groups. The champion of each group promoted to
Segunda División.