The Theodore Roosevelt United States Courthouse is a courthouse in Downtown Brooklyn, New York City, that houses the United States District Court for the Eastern District of New York. It is across the street from the Federal Building and Post Office, which houses, among other things, the Eastern District of New York's bankruptcy court.

Downtown Brooklyn is the third largest central business district in New York City, and is located in the northwestern section of the borough of Brooklyn. The neighborhood is known for its office and residential buildings, such as the Williamsburgh Savings Bank Tower and the MetroTech Center office complex.