The 1991 Greek Cup final was the 47th final of the Greek Cup. For the first time in the history of the institution, HFF decided in the establishment of a two-legged final, according to the model of Coppa Italia.[1] The contesting teams were Athinaikos and Panathinaikos. It was Athinaikos' first ever Greek Cup final in their 74 years of existence and Panathinaikos' nineteenth Greek Cup final in their 83-year history.[2] The first match took place on 15 May 1991 at Leoforos Alexandras Stadium and the second match took place on 22 May 1991 at the Olympic Stadium. Athinaikos selected as their home ground for the final Leoforos Alexandras Stadium that was the original home ground of Panathinaikos, but was vacant at the time, instead their own that was Vyronas Municipal Stadium. Since Panathinaikos won the trophy and achieved the double, Athinaikos participated in the next season's European Cup Winners' Cup, for the first and only time in their history as the runners-up.[3] The goalkeeper of Athinaikos, Nikos Sarganis competed in a Cup final with his fourth club, after Kastoria, Olympiacos and Panathinaikos. The second leg of the final was the last match for the referee, Meletis Voutsaras.
Panathinaikos had reached the Greek Cup final eighteen times, winning eleven of them. The last time that they played in a final was in 1989, where they had won Panionios by 3–1.[4]
