1991 Basque foral elections

The 1991 Basque foral elections were held on Sunday, 26 May 1991, to elect the 4th General Assemblies of Álava, Biscay and Gipuzkoa. All 153 seats in the three General Assemblies were up for election. The elections were held simultaneously with regional elections in thirteen autonomous communities and local elections all throughout Spain.

Foral deputation control
The following table lists party control in the foral deputations. Gains for a party are displayed with the cell's background shaded in that party's colour.