Cadmans Cottage or Cadman's Cottage is a heritage-listed former water police station and sailor's home and now visitor attraction located at 110 George Street in the inner city Sydney suburb of The Rocks in the City of Sydney local government area of New South Wales, Australia. The property is owned by NSW Office of Environment and Heritage, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999.