Observer Hotel is a heritage-listed hotel at 69 George 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 designed by Halligan & Wilton and built from 1908 to 1909. 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.

The Rocks is a suburb, tourist precinct and historic area of Sydney's city centre, in the state of New South Wales, Australia. It is located on the southern shore of Sydney Harbour, immediately north-west of the Sydney central business district.