| Election Name: | 1990 Bavarian state election |
| Country: | Bavaria |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1986 Bavarian state election |
| Previous Year: | 1986 |
| Next Election: | 1994 Bavarian state election |
| Next Year: | 1994 |
| Seats For Election: | All 204 seats in the Landtag of Bavaria |
| Majority Seats: | 103 |
| Election Date: | 14 October 1990 |
| Turnout: | 11,098,912 (65.9%) 4.2% |
| Leader1: | Max Streibl |
| Party1: | Christian Social Union in Bavaria |
| Last Election1: | 128 seats, 55.8% |
| Seats1: | 127 |
| Popular Vote1: | 6,093,514 |
| Seat Change1: | 1 |
| Percentage1: | 54.9% |
| Swing1: | 0.9% |
| Party2: | Social Democratic Party of Germany |
| Last Election2: | 61 seats, 27.5% |
| Seats2: | 58 |
| Popular Vote2: | 2,882,008 |
| Seat Change2: | 3 |
| Percentage2: | 26.0% |
| Swing2: | 1.5% |
| Party4: | Alliance 90/The Greens |
| Last Election4: | 15 seats, 7.5% |
| Seats4: | 12 |
| Popular Vote4: | 712,101 |
| Seat Change4: | 3 |
| Percentage4: | 6.4% |
| Swing4: | 1.1% |
| Party5: | Free Democratic Party (Germany) |
| Last Election5: | 0 seats, 3.8% |
| Seats5: | 7 |
| Popular Vote5: | 572,338 |
| Seat Change5: | 7 |
| Percentage5: | 5.2% |
| Swing5: | 1.4% |
| Map Size: | 300px |
| Minister-President | |
| Before Election: | Max Streibl |
| Before Party: | Christian Social Union of Bavaria |
| After Election: | Max Streibl |
| After Party: | Christian Social Union of Bavaria |
The 1990 Bavarian state election was held on 14 October 1990 to elect the members of the 12th Landtag of Bavaria. It took place shortly after the formal reunification of Germany on 3 October. The Christian Social Union (CSU) led by Minister-President Max Streibl retained its majority. The Free Democratic Party (FDP) also re-entered the Landtag for the first time since 1982.
The table below lists parties represented in the 11th Landtag of Bavaria.
| Name | Ideology | Leader(s) | 1986 result | |||||
|---|---|---|---|---|---|---|---|---|
| Votes (%) | Seats | |||||||
| bgcolor= | CSU | Christian Social Union in Bavaria | Christian democracy | Max Streibl | 55.8% | |||
| bgcolor= | SPD | Social Democratic Party of Germany | Social democracy | Karl-Heinz Heirsemann | 27.5% | |||
| bgcolor= | Grüne | The Greens | Green politics | 7.5% | ||||
|-! colspan="2" | Party! Votes! %! +/-! Seats ! +/-! Seats %|-| bgcolor=| | align=left | Christian Social Union (CSU)| align=right| 6,093,514| align=right| 54.9| align=right| 0.9| align=right| 127| align=right| 1| align=right| 62.3|-| bgcolor=| | align=left | Social Democratic Party (SPD)| align=right| 2,882,008| align=right| 26.0| align=right| 1.5| align=right| 58| align=right| 3| align=right| 28.4|-| bgcolor=| | align=left | The Greens (Grüne)| align=right| 712,101| align=right| 6.4| align=right| 1.1| align=right| 12| align=right| 3| align=right| 5.9|-| bgcolor=| | align=left | Free Democratic Party (FDP)| align=right| 572,338| align=right| 5.2| align=right| 1.4| align=right| 7| align=right| 7| align=right| 3.4|-! colspan=8||-| bgcolor=| | align=left | The Republicans (REP)| align=right| 538,615| align=right| 4.9| align=right| 1.9| align=right| 0| align=right| ±0| align=right| 0|-| bgcolor=| | align=left | Ecological Democratic Party (ÖDP)| align=right| 192,414| align=right| 1.7| align=right| 1.0| align=right| 0| align=right| ±0| align=right| 0|-| | align=left | Others| align=right| 106,922| align=right| 1.0| align=right| | align=right| 0| align=right| ±0| align=right| 0|-! align=right colspan=2| Total! align=right| 11,098,912! align=right| 100.0! align=right| ! align=right| 204! align=right| ±0! align=right| |-! align=right colspan=2| Voter turnout! align=right| ! align=right| 65.9! align=right| 4.2! align=right| ! align=right| ! align=right| |}