The British Seamen's Hotel is a heritage-listed bar and former hotel, boarding house, office building located at 39-43 Argyle Street, in the inner city Sydney suburb of The Rocks in the City of Sydney local government area of New South Wales, Australia. John Gill built the property in 1886 and 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.