The Brooklyn Public Library (BPL) is the public library system of the New York City borough of Brooklyn. It is the sixteenth largest public library system in the United States by holding and the seventh by number of visitors. Like the two other public library systems in New York City, it is an independent nonprofit organization that is funded by the city and state governments, the federal government, and private donors. In marketing materials, the library styles its name as Bklyn Public Library.

The government of New York City, headquartered at New York City Hall in Lower Manhattan, is organized under the New York City Charter and provides for a mayor-council system. The mayor is elected to a four-year term and is responsible for the administration of city government. The New York City Council is a unicameral body consisting of 51 members, each elected from a geographic district, normally for four-year terms. Primary elections for local offices use ranked choice voting, while general elections use plurality voting. All elected officials are subject to a two consecutive-term limit. The court system consists of two citywide courts and three statewide courts.