The 1920 Bavarian state election was held on 6 June 1920 to elect the 155 members of the Landtag of Bavaria.
Following the incorporation of Coburg into Bavaria, the Coburg Landtag elected two Social Democratic Party members and one German Democratic Party member to join the Bavarian Landtag from 1 July 1920.
A by-election was held in Coburg on 7 November 1920 to elect the region's three members to the Bavarian Landtag.
| Party | Votes | % | Seats | |
|---|---|---|---|---|
| German People's Party | 8,442 | 32.8 | 1 | |
| Social Democratic Party of Germany | 8,429 | 32.7 | 1 | |
| German Democratic Party | 6,958 | 27.0 | 1 | |
| Independent Social Democratic Party of Germany | 1,914 | 7.4 | 0 | |
| Invalid/blank votes | 381 | – | – | |
| Total | 26,124 | 100 | 3 | |
| Registered voters/turnout | 45,670 | 61.4 | – | |
| Source: Elections in the Weimar Republic | ||||