- a Democratic political organization in New York City, founded in 1789 as a fraternal benevolent society (Tammany Society ) and associated especially in the late 1800s and early 1900s with corruption and abuse of power.
- the building in which the Tammany organization had its headquarters.
- the central organization of the Democratic Party in New York county. Originally founded as a benevolent society (Tammany Society) in 1789, Tammany Hall was notorious for the corruption in city and state politics that it fostered in the 19th and early 20th centuries
