The Trentino-Alto Adige/Südtirol regional election of 1983 took place on 20 November 1983.
The weakened Christian Democracy continued the alliance with the South Tyrolean People's Party.
| Party | votes | votes (%) | seats | ||
|---|---|---|---|---|---|
| bgcolor=Gray | South Tyrolean People's Party | 170,125 | 29.6 | 22 | |
| bgcolor=White | Christian Democracy | 155,180 | 26.9 | 19 | |
| bgcolor=Red | Italian Communist Party | 47,769 | 8.3 | 6 | |
| bgcolor=Hotpink | Italian Socialist Party | 38,617 | 6.7 | 4 | |
| bgcolor=Lime | Italian Republican Party | 26,027 | 4.5 | 3 | |
| bgcolor=Black | Italian Social Movement | 25,090 | 4.4 | 3 | |
| bgcolor=Gray | Trentino Tyrolean Autonomist Union | 23,741 | 4.1 | 3 | |
| bgcolor=Silver | Integral Autonomy | 18,056 | 3.1 | 2 | |
| bgcolor=Pink | Italian Democratic Socialist Party | 13,400 | 2.3 | 1 | |
| bgcolor=Indianred | Alternative List | 12,942 | 2.3 | 2 | |
| bgcolor=Maroon | Proletarian Democracy | 9,676 | 1.7 | 1 | |
| bgcolor=Blue | Italian Liberal Party | 8,434 | 1.5 | 1 | |
| bgcolor=Indianred | Green List | 8,371 | 1.4 | 1 | |
| bgcolor=Firebrick | South Tyrolean Homeland Federation | 7,285 | 1.3 | 1 | |
| bgcolor=Skyblue | Party of Independents | 6,960 | 1.2 | 1 | |
| bgcolor= | Social Democratic Party of South Tyrol | 3,853 | 0.7 | - | |
| align=left colspan=2 | Total | 575,526 | 100.0 | 70 | |
| Party | votes | votes (%) | seats | |
|---|---|---|---|---|
| Christian Democracy | 127,847 | 44.2 | 16 | |
| Italian Communist Party | 31,690 | 11.0 | 4 | |
| Italian Socialist Party | 27,409 | 9.5 | 3 | |
| Trentino Tyrolean Autonomist Union | 23,741 | 8.2 | 3 | |
| Italian Republican Party | 20,137 | 7.0 | 2 | |
| Integral Autonomy | 17,414 | 6.2 | 2 | |
| Italian Democratic Socialist Party | 9,757 | 3.4 | 1 | |
| Proletarian Democracy | 8,428 | 2.9 | 1 | |
| Green List | 8,371 | 2.9 | 1 | |
| Italian Social Movement | 8,261 | 2.9 | 1 | |
| Italian Liberal Party | 6,256 | 2.2 | 1 | |
| Total | 289,311 | 100.0 | 35 |
| Party | votes | votes (%) | seats | |
|---|---|---|---|---|
| South Tyrolean People's Party | 170,125 | 59.4 | 22 | |
| Christian Democracy | 27,333 | 9.5 | 3 | |
| Italian Social Movement | 16,829 | 5.9 | 2 | |
| Italian Communist Party | 16,079 | 5.6 | 2 | |
| Alternative List | 12,942 | 4.5 | 2 | |
| Italian Socialist Party | 11,208 | 3.9 | 1 | |
| South Tyrolean Homeland Federation | 7,285 | 2.6 | 1 | |
| Party of Independents | 6,960 | 2.4 | 1 | |
| Italian Republican Party | 5,890 | 2.1 | 1 | |
| Social Democratic Party of South Tyrol | 3,853 | 1.4 | - | |
| Italian Democratic Socialist Party | 3,643 | 1.3 | - | |
| Italian Liberal Party | 2,178 | 0.8 | - | |
| Proletarian Democracy | 1,248 | 0.4 | - | |
| Integral Autonomy | 642 | 0.2 | . | |
| Total | 286,215 | 100.0 | 35 |