The Darlinghurst Courthouse is a heritage-listed courthouse building located adjacent to Taylor Square on Oxford Street in the inner city Sydney suburb of Darlinghurst in the City of Sydney local government area of New South Wales, Australia. Constructed in the Old Colonial Grecian style based on original designs by Colonial Architect, Mortimer Lewis, the building structure was completed in 1880 under the supervision of Barnet's successor, James Barnet. It was added to the New South Wales State Heritage Register on 2 April 1999.