Katrin Lompscher (born 7 April 1962) is a German civil engineer and politician who served as Senator for Urban Development and Housing in Berlin in the Senate of Governing Mayor Michael Müller from 2016 to 2020. A member of The Left, she previously served as Senator for Health, Environment and Consumer Protection from 2006 to 2011 in the third Senate of Governing Mayor Klaus Wowereit, and as a member of the Abgeordnetenhaus (House of Representatives) of Berlin from 2011 until her resignation in 2017.