55-59 Harrington Street, The Rocks are heritage-listed serviced apartments and a former terrace house located at 55-59 Harrington Street, in the inner city Sydney suburb of The Rocks in the City of Sydney local government area of New South Wales, Australia. It was built from 1886. It is also known as Stafford Terrace; Stafford Apartments and 75 Harrington Street; Clocktower Development. The property is owned by Property NSW, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 10 May 2002.