The 1991 ACB Playoffs was the final phase of the 1990–91 ACB season. It started on Wednesday, April 3, 1991, and run until Saturday, May 19, 1991.
First round The first round were best-of-3 series.
Montigalà Joventut vs. DYC Breogán
Montigalà Joventut won the series 2-0
At. Madrid Villalba vs. Valvi Girona
At. Madrid Villalba won the series 2-0
Taugrés vs. Pamesa Valencia
Taugrés won the series 2-0
Real Madrid Otaysa vs. Caja Ronda
Real Madrid Otaysa won the series 2-0
Estudiantes Caja Postal vs. Caixa Ourense
Estudiantes Caja Postal won the series 2-0
CAI Zaragoza vs. Huesca La Magia
CAI Zaragoza won the series 2-0
Fórum Valladolid vs. Mayoral Maristas
Fórum Valladolid won the series 2-0
FC Barcelona vs. Caja San Fernando
FC Barcelona won the series 2-0
Quarterfinals The quarterfinals were best-of-3 series.
Montigalà Joventut vs. At. Madrid Villalba
Montigalà Joventut won the series 2-0.
Real Madrid Otaysa vs. Taugrés
Taugrés won the series 2-0
Estudiantes Caja Postal vs. CAI Zaragoza
Estudiantes Caja Postal won the series 2-0
FC Barcelona vs. Fórum Valladolid
FC Barcelona won the series 2-1
Semifinals The semifinals were best-of-5 series.
Montigalà Joventut vs. Taugrés
Montigalà Joventut won the series 3-1
FC Barcelona vs. Estudiantes Caja Postal
FC Barcelona won the series 3-1
Finals The finals was a best-of-5 series.
Montigalà Joventut vs. FC Barcelona
Montigalà Joventut won the series 3-1
ACB Finals MVP: Corny Thompson
1990-91 ACB League Montigalà Joventut3rd Title 1st since ACB
References ACB.com