Julian Simon Grünke (born 31 August 1995) is a German politician from the Free Democratic Party (FDP).

From 2016 to 2022 he studied political science and a minor in business economics at the Eberhard Karls University of Tübingen.

From 2022 until his entry into the Bundestag in 2024 he was parliamentary assistant to the Member of the European Parliament Andreas Glück.

Grünke joined the Young Liberals and the FDP in 2017.

Grünke ran for office in the 2021 German federal election in the Tübingen constituency, but initially missed out on a place in the Bundestag.