Theresa Reintke (born 9 May 1987) is a German politician who has been serving as a member of the European Parliament from Germany since 2014. She is a member of the Alliance '90/The Greens, part of The Greens–European Free Alliance. From 2011 to 2013 she was the spokesperson of the Federation of Young European Greens.

Reintke was born and raised in Gelsenkirchen. She studied political science at the Otto-Suhr-Institut of the Free University of Berlin, where her thesis was on "Local NGOs and sexualised violence in the Balkan conflicts". She also worked as a researcher at the Bundestag for representative Ulrich Schneider.

Reintke was a member of the executive board of German Green Youth from 2008 to 2009, and from 2011 to 2013 was the spokesperson of the Federation of Young European Greens.

Elected to the European Parliament in the 2014 European election, Reintke served as member of the Committee on Women's Rights and Gender Equality, the Committee on Employment and Social Affairs and the Committee on Regional Development during her first term. In 2019, she moved to the Committee on Civil Liberties, Justice and Home Affairs. In addition to her committee assignments, Reintke is a member of the European Parliament Intergroup on LGBT Rights, the European Parliament Intergroup on Youth Issues and the European Parliament Intergroup on Western Sahara.

Following the 2019 elections, Reintke was part of a cross-party working group in charge of drafting the European Parliament's work program on rule of law, borders and migration. She has since been serving as deputy chairwoman of the Greens–European Free Alliance (Greens/EFA) group, under the leadership of co-chairs Ska Keller and Philippe Lamberts.