| Election Name: | 1958 Hessian state election |
| Country: | Hesse |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1954 Hessian state election |
| Previous Year: | 1954 |
| Next Election: | 1962 Hessian state election |
| Next Year: | 1962 |
| Seats For Election: | All 96 seats in the Landtag of Hesse |
| Majority Seats: | 49 |
| Election Date: | 23 November 1958 |
| Turnout: | 2,680,548 (82.3% 0.1pp) |
| Candidate1: | Georg-August Zinn |
| Party1: | Social Democratic Party of Germany |
| Last Election1: | 44 seats, 42.6% |
| Seats1: | 48 |
| Seat Change1: | 4 |
| Popular Vote1: | 1,235,361 |
| Percentage1: | 46.9% |
| Swing1: | 4.3pp |
| Candidate2: | Wilhelm Fay |
| Party2: | Christian Democratic Union of Germany |
| Last Election2: | 24 seats, 24.1% |
| Seats2: | 32 |
| Seat Change2: | 8 |
| Popular Vote2: | 843,041 |
| Percentage2: | 32.0% |
| Swing2: | 7.9pp |
| Candidate4: | Wolfram Dörinkel |
| Party4: | Free Democratic Party (Germany) |
| Last Election4: | 21 seats, 20.5% |
| Seats4: | 9 |
| Seat Change4: | 12 |
| Popular Vote4: | 250,310 |
| Percentage4: | 9.5% |
| Swing4: | 11.0pp |
| Candidate5: | Gotthard Franke |
| Party5: | All-German Bloc/League of Expellees and Deprived of Rights |
| Last Election5: | 7 seats, 7.7% |
| Seats5: | 7 |
| Seat Change5: | 0 |
| Popular Vote5: | 193,996 |
| Percentage5: | 7.4% |
| Swing5: | 0.3pp |
| Map Size: | 250px |
| Government | |
| Before Election: | Second Zinn cabinet |
| Before Party: | SPD–GB/BHE |
| Posttitle: | Government after election |
| After Election: | Third Zinn cabinet |
| After Party: | SPD–GB/BHE |
The 1958 Hessian state election was held on 23 November 1958 to elect the 4th Landtag of Hesse. The outgoing government was a coalition of the Social Democratic Party (SPD) and All-German Bloc/League of Expellees (GB/BHE) led by Minister-President Georg-August Zinn.
The election saw major losses for the Free Democratic Party (FDP) matched by gains for the SPD and Christian Democratic Union (CDU), which established itself as the major opposition to the SPD-led government. The FDP finished on 10%, its worst result since the inaugural postwar elections in 1946. The SPD's coalition partner the GB/BHE remained steady on 7%, and the government was renewed for a second term.
The Landtag was elected via mixed-member proportional representation. 48 members were elected in single-member constituencies via first-past-the-post voting, and 48 then allocated using compensatory proportional representation. A single ballot was used for both. An electoral threshold of 5% of valid votes is applied to the Landtag; parties that fall below this threshold are ineligible to receive seats.
See main article: 1954 Hessian state election. In the previous election held on 28 November 1954, the SPD suffered small losses and fell to 43%, but remained clearly the largest party. The CDU emerged as the second largest party by a small margin as the FDP fell to 20%. The GB/BHE ran independently and won 8%, subsequently forming a coalition with the SPD.
The table below lists parties represented in the 3rd Landtag of Hesse.
| Name | Ideology | Lead candidate | 1954 result | |||||
|---|---|---|---|---|---|---|---|---|
| Votes (%) | Seats | |||||||
| bgcolor= | SPD | Social Democratic Party of Germany | Social democracy | Georg-August Zinn | 42.6% | |||
| bgcolor= | CDU | Christian Democratic Union of Germany | Christian democracy | Wilhelm Fay | 24.1% | |||
| bgcolor= | FDP | Free Democratic Party | Classical liberalism | Heinrich Kohl | 20.5% | |||
| bgcolor= | GB/BHE | All-German Bloc/League of Expellees and Deprived of Rights | National conservatism | Gotthard Franke | 7.7% | |||