Florian Müller (born 13 November 1997) is a German professional footballer who plays as a goalkeeper for SC Freiburg, on loan from Mainz 05.
Müller playing football with FV Lebach until he joined 1. FC Saarbrücken. He played at Saarbrücken until he joined in the youth academy of Mainz 05 in 2013. In Mainz he played for the U-17 and U-19 teams, and on 1 July 2016 he signed a professional contract for the second team, playing in the 3. Liga.
In the 3. Liga, Müller made his competitive debut during the 2015–16 season when he played in the 5–1 defeat to Chemnitzer FC on matchday 32, taking the place of goalkeeper Jannik Huth.
For the 2016–17 season, Müller was included in Mainz’s first team squad, playing in the Bundesliga.
On 15 September 2020, Müller joined SC Freiburg on a season-long loan deal. As a result, Müller has initially become the first-choice goalkeeper ahead of Benjamin Uphoff and Mark Flekken, following Alexander Schwolow’s departure to Hertha.
In October 2015, Müller was called up by the coach of the Germany national under-19 football team, Marcus Sorg. He made his debut on 9 October 2015 during the 1–0 victory in the friendly match against the Mexico national under-19 football team, after coming on at the start of the second half for Timo Königsmann. He also made additional appearances in friendlies against the under-19 teams of Serbia on 15 November 2015 and South Korea on 29 March 2016, both ending in 1–0 wins.