The Senate of Berlin is the executive body governing the city of Berlin, which at the same time is a state of Germany. According to the Constitution of Berlin the Senate consists of the Governing Mayor of Berlin and up to ten senators appointed by the governing mayor, two of whom are appointed (deputy) mayors. The Senate meets weekly at the Rotes Rathaus.

The governing mayor of Berlin is the head of government, presiding over the Berlin Senate. As Berlin is an independent city as well as one of the constituent states of Germany, the office is the equivalent of the ministers president of the other German states, except the states of Hamburg and Bremen, where the heads of government are called "First Mayor" and "President of the Senate and Mayor", respectively. The title Governing Mayor of Berlin is the equivalent of Lord Mayor in the meaning of an actual executive leader.