Björn Thümler (pronounced [bjœʁn tyːmlaː]; born 22 November 1970) is a German politician of the Christian Democratic Union (CDU) who served as Minister for Science and Culture for Lower Saxony from 2017 to 2022. Thümler has been a part of the Landtag of Lower Saxony since 2003. As minister, he also was a member of the German Bundesrat from 2017 to 2022.