The government of Hamburg is divided into executive, legislative and judicial branches. Hamburg is a city-state and municipality, and thus its governance deals with several details of both state and local community politics. It takes place in two ranks – a citywide and state administration, and a local rank for the boroughs. The head of the city-state's government is the First Mayor and President of the Senate. A ministry is called Behörde (office) and a state minister is a Senator in Hamburg. The legislature is the state parliament, called Hamburgische Bürgerschaft, and the judicial branch is composed of the state supreme court and other courts. The seat of the government is Hamburg Rathaus. The President of the Hamburg Parliament is the highest official person of the Free and Hanseatic City of Hamburg. This is a traditional difference to the other German states. The president is not allowed to exert any occupation of the executive.

Hamburg, officially the Free and Hanseatic City of Hamburg, is the second-largest city in Germany, after Berlin, and 8th-largest in the European Union, with a population of over 1.9 million. The Hamburg Metropolitan Region has a population of over 5.1 million and is the ninth-biggest metropolitan region by GDP in the European Union.