The title Mayor is also held by the heads of the twelve boroughs of Berlin, although they do not actually preside over self-governmental municipalities.

As capital of the Kingdom of Prussia, Berlin received its first Lord Mayor (Oberbürgermeister) according to the Prussian reforms after the retreat of the Napoleonic occupation troops in 1809, approved by King Frederick William III.

The two-stage administration and the office of the boroughs' mayors were implemented in the course of the wide-ranging incorporations by the 1920 Greater Berlin Act.

During the Allied occupation after World War II, the city assembly (Stadtverordnetenversammlung) elected the Social Democratic politician Ernst Reuter as Lord Mayor on 24 June 1947, who, however, did not obtain the affirmation by the Allied Kommandatura of Berlin[1] due to Soviet reservations.

Following the Communist putsch in Berlin's city government in September 1948, a separate city parliament (still named Stadtverordnetenversammlung von Groß-Berlin) was set up, however, de facto only competent for the western occupation sectors of what was to become West Berlin was elected on 5 December 1948, electing two days later a separate city government and Ernst Reuter Lord Mayor for West Berlin.