| Cabinet Name: | First Senate of Peter Tschentscher |
| Cabinet Number: | 29th |
| Cabinet Type: | Senate |
| Jurisdiction: | Hamburg |
| Flag: | Wappen der Hamburgischen Bürgerschaft.svg |
| Flag Border: | true |
| Incumbent: | 28 March 2018 – 9 June 2020 |
| Date Formed: | 28 March 2018 |
| Date Dissolved: | 9 June 2020 |
| Government Head Title: | First Mayor |
| Government Head: | Peter Tschentscher |
| Deputy Government Head Title: | Second Mayor |
| Deputy Government Head: | Katharina Fegebank |
| Members Number: | 11 |
| Political Parties: | Social Democratic Party Alliance 90/The Greens |
| Legislature Status: | Coalition government |
| Opposition Parties: | Christian Democratic Union The Left Free Democratic Party Alternative for Germany |
| Election: | None |
| Legislature Term: | 21st Hamburg Parliament |
| Predecessor: | Second Scholz senate |
| Successor: | Second Tschentscher senate |
The First Tschentscher senate was the state government of Hamburg between 2018 and 2020, sworn in on 28 March 2018 after Peter Tschentscher was elected as First Mayor by the members of the Hamburg Parliament. It was the 29th Senate of Hamburg.
It was formed after the resignation of First Mayor Olaf Scholz, and was a continuation of the coalition government formed by the Social Democratic Party (SPD) and Alliance 90/The Greens (GRÜNE) after the 2015 Hamburg state election. Excluding the First Mayor, the senate comprised 11 ministers, called Senators. Seven were members of the SPD, three were members of the Greens, and one was an independent politician.
The first Tschentscher senate was succeeded by the second Tschentscher senate on 10 June 2020.
The previous Senate was a coalition government of the SPD and Greens led by First Mayor Olaf Scholz. On 9 March 2018, he announced his switch to federal politics after being nominated as Vice-Chancellor and Minister for Finance in the fourth Merkel cabinet.[1]
The same day, finance senator Peter Tschentscher was nominated as his successor by the SPD executive.[2] Scholz formally resigned on 13 March. Tschentscher was approved by the party congress on 24 March with 95% of votes in favour.[3]
Peter Tschentscher was elected as First Mayor by the Parliament on 28 March, winning 71 votes out of 121 cast.[4]
The composition of the Senate at the time of its dissolution was as follows:
| Portfolio | Senator | Party | Took office | Left office | State secretaries | ||||
|---|---|---|---|---|---|---|---|---|---|
| President of the Senate and First Mayor Senate Chancellery | Peter Tschentscher | bgcolor= | SPD | 28 March 2018 | 9 June 2020 | ||||
| Second Mayor Office for Science, Research and Equality | Katharina Fegebank | bgcolor= | GRÜNE | 28 March 2018 | 9 June 2020 | ||||
| Office for Justice and Consumer Protection | Till Steffen | bgcolor= | GRÜNE | 28 March 2018 | 9 June 2020 | ||||
| Office for Education and Vocational Training | Ties Rabe | bgcolor= | SPD | 28 March 2018 | 9 June 2020 | ||||
| Office for Culture and Media | Carsten Brosda | bgcolor= | SPD | 28 March 2018 | 9 June 2020 | ||||
| Office for Labour, Social Affairs, Family and Integration | Melanie Leonhard | bgcolor= | SPD | 28 March 2018 | 9 June 2020 | ||||
| Office for Health and Consumer Protection | Cornelia Prüfer-Storcks | bgcolor= | SPD | 28 March 2018 | 9 June 2020 | ||||
| Office for Urban Development and Housing | Dorothee Stapelfeldt | bgcolor= | SPD | 28 March 2018 | 9 June 2020 | ||||
| Office for Environment and Energy | Jens Kerstan | bgcolor= | GRÜNE | 28 March 2018 | 9 June 2020 | ||||
| Office for Economics, Transport and Innovation | Frank Horch | bgcolor= | Ind. | 28 March 2018 | 31 October 2018 | ||||
| Michael Westhagemann | bgcolor= | Ind. | 1 November 2018 | 9 June 2020 | |||||
| Office for Interior and Sport | Andy Grote | bgcolor= | SPD | 28 March 2018 | 9 June 2020 | ||||
| Office for Finance | Andreas Dressel | bgcolor= | SPD | 28 March 2018 | 9 June 2020 | ||||