Bedford–Stuyvesant (/ˌbɛdfərd ˈstaɪvəsənt/ BED-fərd STY-və-sənt), colloquially known as Bed–Stuy, is a neighborhood in the northern section of the New York City borough of Brooklyn. Bedford–Stuyvesant is bordered by Flushing Avenue to the north (bordering Williamsburg), Classon Avenue to the west (bordering Clinton Hill), Broadway to the east (bordering Bushwick and East New York), and Atlantic Avenue to the south (bordering Crown Heights and Brownsville). The main shopping street, Fulton Street, runs east–west the length of the neighborhood and intersects high-traffic north–south streets including Bedford Avenue, Nostrand Avenue, and Stuyvesant Avenue. Bedford–Stuyvesant contains four smaller neighborhoods: Bedford, Stuyvesant Heights, Ocean Hill, and Weeksville (also part of Crown Heights). Part of Clinton Hill was once considered part of Bedford–Stuyvesant.

Bedford–Stuyvesant has the largest collection of intact and largely untouched Victorian architecture in the United States, with roughly 8,800 buildings built before 1900. Its building stock includes many historic brownstones, developed for the expanding upper-middle class from the 1890s to the late 1910s. They contain highly ornamental detailing throughout their interiors and have classical architectural elements, such as brackets, quoins, fluting, finials, and elaborate frieze and cornice banding.

Since the late 1930s, the neighborhood has been a major cultural center for Brooklyn's African American population. Following the construction of the Fulton Street subway line (A and ​C trains) in 1936, African Americans left an overcrowded Harlem for greater housing availability in Bedford–Stuyvesant. From Bedford–Stuyvesant, African Americans have since moved into the surrounding areas of Brooklyn, such as East New York, Crown Heights, Brownsville, and Fort Greene. Since the early 2000s, Bedford-Stuyvesant has undergone significant gentrification, resulting in a dramatic demographic shift combined with increasing rent and real estate prices.

Bedford–Stuyvesant is mostly part of Brooklyn Community District 3. Its primary ZIP Codes are 11205, 11206, 11216, 11221, 11233, and 11238. Bedford–Stuyvesant is patrolled by the 79th and 81st Precincts of the New York City Police Department. Politically it is represented by the New York City Council's 36th District.

The neighborhood's name combines the names of what was the hamlet of Bedford, and the Stuyvesant Heights neighborhoods, initially separate neighborhoods which grew together. The 17th-century hamlet of Bedford was named after the market town of Bedford in England. Stuyvesant Heights was named for Peter Stuyvesant, the last governor of the colony of New Netherland.

In the second half of the 17th century, the lands which constitute the present neighborhood belonged to three Dutch settlers: Dirck Janse Hooghland, who operated a ferryboat on the East River, and farmers Jan Hansen, and Leffert Pietersen van Haughwout. In pre-revolutionary Kings County, Bedford was the first major settlement east of the Village of Brooklyn, on the ferry road to the town of Jamaica and eastern Long Island. Stuyvesant Heights, however, was farmland; the area became a community after the American Revolutionary War.

For most of its early history, Stuyvesant Heights was part of the outlying farm area of the small hamlet of Bedford, settled by the Dutch during the 17th century within the incorporated town of Breuckelen. The hamlet had its beginnings when a group of Breuckelen residents decided to improve their farm properties behind the Wallabout section, which gradually developed into an important produce center and market. The petition to form a new hamlet was approved by Governor Stuyvesant in 1663. Its leading signer was Thomas Lambertsen, a carpenter from Holland. A year later, the English capture of New Netherland signaled the end of Dutch rule. In Governor Nicolls' Charter of 1667 and in the Charter of 1686, Bedford is mentioned as a settlement within the Town of Brueckelen. Bedford hamlet had an inn as early as 1668, and, in 1670, the people of Breuckelen purchased from the Canarsie Indians an additional area for common lands in the surrounding region.

Bedford Corners, approximately located where the present Bedford Avenue meets Fulton Street, and only three blocks west of the present Historic District, was the intersection of several well traveled roads. The Brooklyn and Jamaica Turnpike, constructed by a corporation founded in 1809 and one of the oldest roads in Kings County, ran parallel to the present Fulton Street, from the East River ferry to the village of Brooklyn, thence to the hamlet of Bedford and on toward Jamaica via Bed–Stuy. Farmers from New Lots and Flatbush used this road on their way to Manhattan. Within the Stuyvesant Heights Historic District, the Turnpike ran along the approximate line of Decatur Street. Cripplebush Road to Newtown and the Clove Road to Flatbush also met at Bedford Corners. Hunterfly Road, which joined the Turnpike about a mile to the east of Clove Road, also served as a route for farmers and fishermen of the Canarsie and New Lots areas.