Thomas Hacker (born 9 October 1967) is a German tax consultant and politician of the Free Democratic Party (FDP) who has been serving as a member of the Bundestag from the state of Bavaria since 2017.

After high school graduation and military service, he completed an apprenticeship as a bank clerk and then studied business administration at the University of Bayreuth, majoring in business taxation, finance and banking management.

From 2002 to 2016 Hacker was a partner in an auditing and tax consultancy firm based in Kulmbach.

Hacker has been a member of the German Bundestag since the 2017 elections, representing Bayreuth.

[2] In the negotiations to form a so-called traffic light coalition of the Social Democratic Party (SPD), the Green Party and the FDP following the 2021 federal elections, Hacker was part of his party's delegation in the working group on cultural affairs and media policy, co-chaired by Carsten Brosda, Claudia Roth and Otto Fricke.