Matthias Kollatz is a German politician of the Social Democratic Party of Germany (SPD) who served as State Minister of Finance in the government of Mayor Michael Müller of Berlin from 2014 to 2021.

The 2023 Berlin repeat state election was held on 12 February 2023 to once again elect the 19th Abgeordnetenhaus of Berlin as the 2021 Berlin state election held on 26 September 2021 was declared invalid due to irregularities. Also affected were parts of the 2021 German federal election in Berlin, these were repeated on 11 February 2024.