| Election Name: | 1990 Lower Saxony state election |
| Country: | Lower Saxony |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1986 Lower Saxony state election |
| Previous Year: | 1986 |
| Next Election: | 1994 Lower Saxony state election |
| Next Year: | 1994 |
| Seats For Election: | All 155 seats in the Landtag of Lower Saxony |
| Majority Seats: | 78 |
| Election Date: | 13 May 1990 |
| Turnout: | 4,216,296 (74.6%) 2.7% |
| Leader1: | Gerhard Schröder |
| Party1: | Social Democratic Party of Germany |
| Last Election1: | 66 seats, 42.1% |
| Seats1: | 71 |
| Seat Change1: | 5 |
| Popular Vote1: | 1,865,267 |
| Percentage1: | 44.2% |
| Swing1: | 2.1% |
| Leader2: | Rita Süssmuth |
| Party2: | Christian Democratic Union of Germany |
| Last Election2: | 69 seats, 44.3% |
| Seats2: | 67 |
| Seat Change2: | 2 |
| Popular Vote2: | 1,771,974 |
| Percentage2: | 42.0% |
| Swing2: | 2.3% |
| Party4: | Free Democratic Party (Germany) |
| Last Election4: | 9 seats, 6.0% |
| Seats4: | 9 |
| Seat Change4: | 0 |
| Popular Vote4: | 252,615 |
| Percentage4: | 6.0% |
| Swing4: | 0.0% |
| Party5: | Alliance 90/The Greens |
| Last Election5: | 11 seats, 7.1% |
| Seats5: | 8 |
| Seat Change5: | 3 |
| Popular Vote5: | 229,846 |
| Percentage5: | 5.5% |
| Swing5: | 1.6% |
| Map Size: | 350px |
| Minister-President | |
| Before Election: | Ernst Albrecht |
| Before Party: | Christian Democratic Union of Germany |
| After Election: | Gerhard Schröder |
| After Party: | Social Democratic Party of Germany |
The 1990 Lower Saxony state election was held on 13 May 1990 to elect the members of the 12th Landtag of Lower Saxony. The incumbent coalition government of the Christian Democratic Union (CDU) and Free Democratic Party (FDP) led by Minister-President Ernst Albrecht was defeated. The Social Democratic Party (SPD) subsequently formed a coalition with The Greens, and SPD leader Gerhard Schröder was elected Minister-President.
The table below lists parties represented in the 11th Landtag of Lower Saxony.
| Name | Ideology | Leader(s) | 1986 result | |||||
|---|---|---|---|---|---|---|---|---|
| Votes (%) | Seats | |||||||
| bgcolor= | CDU | Christian Democratic Union of Germany | Christian democracy | Rita Süssmuth | 44.3% | |||
| bgcolor= | SPD | Social Democratic Party of Germany | Social democracy | Gerhard Schröder | 42.1% | |||
| bgcolor= | Grüne | The Greens | Green politics | 7.1% | ||||
| bgcolor= | FDP | Free Democratic Party | Classical liberalism | 6.0% | ||||
|-! colspan="2" | Party! Votes! %! +/-! Seats ! +/-! Seats %|-| bgcolor=| | align=left | Social Democratic Party (SPD)| align=right| 1,865,267| align=right| 44.2| align=right| 2.1| align=right| 71| align=right| 5| align=right| 45.8|-| bgcolor=| | align=left | Christian Democratic Union (CDU)| align=right| 1,771,974| align=right| 42.0| align=right| 2.3| align=right| 67| align=right| 2| align=right| 43.2|-| bgcolor=| | align=left | Free Democratic Party (FDP)| align=right| 252,615| align=right| 6.0| align=right| 0.0| align=right| 9| align=right| ±0| align=right| 5.8|-| bgcolor=| | align=left | Alliance 90/The Greens (Grüne)| align=right| 229,846| align=right| 5.5| align=right| 1.6| align=right| 8| align=right| 3| align=right| 5.2|-! colspan=8||-| bgcolor=|| align=left | The Republicans (REP)| align=right| 62,054| align=right| 1.5| align=right| 1.5| align=right| 0| align=right| ±0| align=right| 0|-| bgcolor=|| align=left | Others| align=right| 34,540| align=right| 0.8| align=right| | align=right| 0| align=right| ±0| align=right| 0|-! align=right colspan=2| Total! align=right| 4,216,296! align=right| 100.0! align=right| ! align=right| 155! align=right| ±0! align=right| |-! align=right colspan=2| Voter turnout! align=right| ! align=right| 74.6! align=right| 2.7! align=right| ! align=right| ! align=right| |}