Florian Hahn (born 14 March 1974) is a German politician of the Christian Social Union (CSU) who has been serving as a member of the Bundestag from the state of Bavaria since 2009.

In addition to his work in parliament, Hahn has been serving as Minister of State at the Federal Foreign Office in the government of Chancellor Friedrich Merz since 2025.

From 2006 until 2009, Hahn worked on public relations at defence company Krauss-Maffei Wegmann (KMW) in Munich.

Hahn joined the Young Union (JU) in 1989.

Hahn first became a member of the Bundestag in the 2009 German federal election. He is a member of the Committee on European Union Affairs and the Defence Committee.

In the negotiations to form a Grand Coalition of Chancellor Angela Merkel's Christian Democrats and the Social Democrats (SPD) following the 2013 federal elections, Rachel Hahn was a part of the CDU/CSU delegation in the working group on education and research policy, led by Johanna Wanka and Doris Ahnen. In similar negotiations following the 2017 federal elections, he was part of the working group on European affairs, led by Peter Altmaier, Alexander Dobrindt and Achim Post. He has been the CDU/CSU's parliamentary group's spokesperson on European affairs (2018-2021) and defense (since 2021).

Since 2019, Hahn has been serving as Deputy Secretary General of the CSU, under the leadership of chairman Markus Söder. That year, he co-chaired the CSU’s convention in Munich, alongside Markus Blume and Thomas Silberhorn.

In June 2017, Hahn voted against Germany's introduction of same-sex marriage.