Green Street House, usually known as Boleyn Castle, was a stately home in Upton Park in the modern London Borough of Newham, East London.
The alternative name derives from the local legend linking the house with Anne Boleyn and from its imposing appearance, notably the castle-like structure called Anne Boleyn’s Tower which lay immediately adjacent to Green Street.
The house lay at the southern end of Green Street, from which it takes its name, a street which forms the boundary between West and East Ham. West Ham United's former Boleyn Ground was built immediately to the east of the House and took its name from the alternative name for the house. In its early years the club referred to their new ground as the Boleyn Castle with Boleyn Ground subsequently becoming the usual term.
The house was demolished in 1955.