Carroll Gardens is a neighborhood in the New York City borough of Brooklyn. Taking up around 40 city blocks, it is bounded by Degraw and Warren Streets (north), Hoyt and Smith Streets (east), Ninth Street or the Gowanus Expressway (south) and the Brooklyn Queens (BQE) and Gowanus Expressways (west).The neighborhoods that surround it are Cobble Hill to the northwest, Boerum Hill to the northeast, Gowanus to the east, Red Hook to the south and southwest, and the Columbia Street Waterfront District to the west.

Originally considered to be part of South Brooklyn or, more specifically, Red Hook, the neighborhood started to have its own identity in the 1960s.The new name came from Charles Carroll, an Irish immigrant who was the only Roman Catholic signer of the Declaration of Independence, and whose name was already attached to Carroll Street and Carroll Park.The name also reflects the large front gardens of brownstones in the Carroll Gardens Historic District and elsewhere in the neighborhood. Despite having an Irish surname, at recent times known as an Italian American neighborhood.

Carroll Gardens is part of Brooklyn Community Board 6,and receives police services from the New York City Police Department's 76th Precinct at 191 Union Street.