Sebastian Brehm (born 18 October 1971) is a German tax advisor and politician of the Christian Social Union (CSU) who has been serving as a member of the Bundestag from the state of Bavaria since 2017.

In 1989 Brehm joined the CSU.

Brehm became a member of the Bundestag in the 2017 German federal election.^[1] He is a member of the Finance Committee and the Committee on Human Rights and Humanitarian Aid.^[2][3] In that capacity, he is his parliamentary group's rapporteur on human rights issues in Russia, Ukraine, Belarus, Moldova, Romania and Bulgaria, among others.

Within his parliamentary group, Brehm coordinates the CSU parliamentarians’ legislative activities on financial policy.^[4]

In 2019, German media reported that Brehm was the parliamentarian who reported the highest income from activities unrelated to his mandate that year with 1.383.500 €.^[5]

Since 2021, Brehm has been serving as one of two treasurers of the CSU, under the leadership of chairman Markus Söder.^[6]

In September 2020, Brehm was one of 15 members of his parliamentary group who joined Norbert Röttgen in writing an open letter to Minister of the Interior Horst Seehofer which called on Germany and other EU counties to take in 5000 immigrants who were left without shelter after fires gutted the overcrowded Mória Reception and Identification Centre on the Greek island of Lesbos.^[8]