Bärbel Dieckmann (née Pritz, born 26 March 1949) is a German politician who was elected mayor of Bonn in 1994 and was in office until 2009.

Internationally, Dieckmann served as executive president of the Council of European Municipalities and Regions (CEMR) between 1999 and 2003.

From 2005 she chaired the World Mayors Council on Climate Change (WMCCC);[2] the office was established after the Kyoto Protocol came into force.

In 2005, Dieckmann became vice federal chairwoman of the SPD under chairman Matthias Platzeck, but left office two years later.

[3] In 2019, she was appointed by Federal Minister for Economic Cooperation and Development Gerd Müller as co-chair (alongside Gerda Hasselfeldt) of a commission in charge of drafting recommendations on how to address the causes of displacement and migration.