| Britta Haßelmann | |
| Office: | Leader of the Alliance 90/The Greens in the Bundestag |
| Term Start: | 7 December 2021 |
| Alongside: | Katharina Dröge |
| Predecessor: | Katrin Göring-Eckardt |
| Office1: | Chief Whip of the Alliance '90/The Greens in the Bundestag |
| Leader1: | Katrin Göring-Eckardt Anton Hofreiter |
| Term Start1: | 8 October 2013 |
| Term End1: | 7 December 2021 |
| Predecessor1: | Volker Beck |
| Successor1: | Irene Mihalic |
| Office2: | Member of the Bundestag for North Rhine-Westphalia |
| Term Start2: | 18 September 2005 |
| Constituency2: | Alliance 90/The Greens |
| Birth Date: | 1961 12, df=yes |
| Birth Place: | Straelen, West Germany (now Germany) |
| Party: | Alliance 90/The Greens |
| Nationality: | German |
| Alma Mater: | University of Bielefeld |
Britta Haßelmann (born 10 December 1961) is a German politician of Alliance 90/The Greens who has been serving as co-chair of the Green Party’s parliamentary group in the Bundestag since 2021, alongside Katharina Dröge.[1] From 2013 until 2021, she was the group’s first manager (German: Erste Parlamentarische Geschäftsführerin).[2] She has been a member of the Bundestag since 2005.
Haßelmann was born in Straelen and later studied social work at the University of Bielefeld.
Haßelmann became a member of the Green Party in 1994. From 2000 until 2006, she served – alongside Frithjof Schmidt – as co-chair of the Green Party in North Rhine-Westphalia, the party's largest chapter.[3] During that period, her party was in a coalition government with the Social Democratic Party under Minister-President Wolfgang Clement.
Haßelmann has been a member of the German Bundestag since the 2005 federal election, representing Bielefeld. From 2005 until 2017, she served on the Finance Committee. In 2009, she also joined the Council of Elders, which – among other duties – determines daily legislative agenda items and assigns committee chairpersons based on party representation. From 2017, she served on the on the Scrutiny of Elections, Immunity and the Rules of Procedure as well as on the on the Election of Judges (Wahlausschuss), which is in charge of appointing judges to the Federal Constitutional Court of Germany. She is also a member of the of Bundestag and Bundesrat.[4]
Within her parliamentary group, Haßelmann served as Chief Whip from 2013 until 2021, under the leadership of the group's co-chairs Katrin Göring-Eckardt and Anton Hofreiter. In the – unsuccessful – negotiations to form a coalition government with the Christian Democrats – both the Christian Democratic Union (CDU) and the Christian Social Union in Bavaria (CSU) – and the Free Democratic Party following the 2017 elections, she was part of her party's delegation.
From 2018, Haßelmann was part of a cross-party working group on a reform of Germany's electoral system, chaired by Wolfgang Schäuble.[5]