Tanja Machalet (née Breuer, born 1 May 1974)[1] is a German politician of the Social Democratic Party (SPD).

Machalet became a member of the Bundestag in the 2021 German federal election and she represents the constituency of Montabaur.

In March 2020, Machalet announced that she would not run again in the election for the 18th state parliament of Rhineland-Palatinate.

The district executive of the SPD in the Westerwaldkreis nominated Machalet to succeed Gabi Weber in the Bundestag constituency of Montabaur for the election to the 20th German Bundestag.

On March 20, 2021, she was elected by the relevant delegate conference as the SPD direct candidate in the Bundestag constituency of Montabaur.