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. From 2013 until 2021, she was the group’s first manager (Erste Parlamentarische Geschäftsführerin). She has been a member of the Bundestag since 2005.