- Source: 1999 Basque foral elections
The 1999 Basque foral elections were held on Sunday, 13 June 1999, to elect the 6th 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, as well as the 1999 European Parliament election.
Overall
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.