The 1980 Lombard regional election took place on 8 June 1980. The 3rd term of the Regional Council was chosen.
Election was held under proportional representation with provincial constituencies where the largest remainder method with a Droop quota was used. To ensure more proportionality, remained votes and seats were transferred at regional level and calculated at-large.
The Christian Democracy party was by far the largest. After the election the incumbent president Giuseppe Guzzetti was re-elected at the head of a center-left coalition comprising also the PSI, the PSDI and the PRI.
| Party | Votes | % | Seats | +/- | |
|---|---|---|---|---|---|
| Christian Democracy | 2,240,861 | 38.86 | 34 | 2 | |
| Italian Communist Party | 1,623,352 | 28.15 | 23 | 2 | |
| Italian Socialist Party | 834,111 | 14.46 | 11 | = | |
| Italian Democratic Socialist Party | 260,611 | 4.52 | 3 | = | |
| Italian Social Movement | 251,745 | 4.37 | 3 | = | |
| Italian Liberal Party | 197,301 | 3.42 | 2 | = | |
| Italian Republican Party | 152,605 | 2.65 | 2 | = | |
| Proletarian Democracy | 96,882 | 1.68 | 1 | 1 | |
| Proletarian Unity Party | 86,631 | 1.50 | 1 | 1 | |
| Association for Trieste | 10,001 | 0.17 | 0 | ||
| Milanese List | 3,825 | 0.07 | 0 | ||
| Social Action Christian Party | 2,738 | 0.05 | 0 | ||
| Revolutionary Communist League | 2,590 | 0.04 | 0 | ||
| European Workers' Party | 2,529 | 0.04 | 0 | ||
| Revolutionary Socialist League | 1,086 | 0.02 | 0 | ||
| Total valid votes | 5,766,868 | 80 | |||
| Blank votes | 233,742 | ||||
| Invalid votes (blank included) | 380,286 | ||||
| Total | 6,147,154 | ||||
| Registered voters & turnout | 6,647,073 | 92.48 | |||
| Province | DC | PCI | PSI | PSDI | MSI | PLI | PRI | DP | PdUP | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Milan | 12 | 11 | 6 | 2 | 2 | 2 | 2 | 1 | 1 | 39 | |
| Brescia | 5 | 2 | 1 | 1 | 1 | - | - | - | - | 10 | |
| Bergamo | 5 | 2 | 1 | - | - | - | - | - | - | 8 | |
| Como | 3 | 2 | 1 | - | - | - | - | - | - | 6 | |
| Varese | 3 | 2 | 1 | - | - | - | - | - | - | 6 | |
| Pavia | 2 | 2 | 1 | - | - | - | - | - | - | 5 | |
| Cremona | 2 | 1 | - | - | - | - | - | - | - | 3 | |
| Mantua | 1 | 1 | - | - | - | - | - | - | - | 2 | |
| Sondrio | 1 | - | - | - | - | - | - | - | - | 1 | |
| Total | 34 | 23 | 11 | 3 | 3 | 2 | 2 | 1 | 1 | 80 |