The 1990 Basilicata regional election took place on 6–7 May 1990.
Christian Democracy was by far the largest party, gaining more than twice the share of vote of its main competitors, the Italian Communist Party, which had its worst result ever in a regional election, and the Italian Socialist Party, which gained its best result ever. After the election, the Christian Democrat Antonio Boccia was elected President of the Region.
| Parties | votes | votes (%) | seats | |||
|---|---|---|---|---|---|---|
| bgcolor=White | Christian Democracy | 185,409 | 47.2 | 15 | ||
| bgcolor=Red | Italian Communist Party | 75,604 | 19.2 | 6 | ||
| bgcolor=Hotpink | Italian Socialist Party | 70,947 | 18.0 | 6 | ||
| bgcolor=Pink | Italian Democratic Socialist Party | 23,918 | 6.1 | 2 | ||
| bgcolor=Black | Italian Social Movement | 13,268 | 2.4 | 1 | ||
| bgcolor=Lime | Italian Republican Party | 7,683 | 2.0 | align=right | - | |
| bgcolor=Blue | Italian Liberal Party | 5,889 | 1.5 | align=right | - | |
| bgcolor=Olive | Green List | 3,722 | 1.0 | align=right | - | |
| bgcolor=Maroon | Proletarian Democracy | 2,853 | 0.7 | align=right | - | |
| bgcolor=Lightgreen | Rainbow Greens | 1,829 | 0.5 | align=right | - | |
| bgcolor=Gold | Antiprohibitionists on Drugs | 1,476 | 0.4 | align=right | - | |
| bgcolor=Green | Southern League Lucania | 631 | 0.2 | align=right | - | |
| Total | 393,229 | 100.0 | 30 | |||