Sydney Supreme Court House, Gothic Revival courthouse in City of Sydney, Australia

The Sydney Supreme Court House, formerly the Old Registry Office, stands at the corner of Elizabeth Street and St James Road. Alexander Dawson designed it in 1859 in the Victorian Tudor style, with smooth dressed sandstone blocks, a slate hipped and gabled roof, a castellated parapet and banded chimneys. James Barnet added a matching brick wing on the southeast corner in 1875 and 1886.

Government architects Alexander Dawson and James Barnet designed this building between 1859 and 1862 as part of judicial development in New South Wales. Staircases were added later in 1875 and 1886, and sections served as bomb shelters during the Second World War.

The building began as the Registry Office, occupied in 1860 by the Registrar General, and now forms part of the Supreme Court House group. Its name survives in the alternative title Sydney Supreme Court House (Old Registry Office). The small scale and simple facade treatment are noted as contributing to the character of the Elizabeth Street corner.

The Old Registry Wing stands at the corner of Elizabeth Street and St James Road, its entrance front behind an iron palisade fence set on a stone plinth. The building remains part of the working Supreme Court complex, so the interior is not open to casual visitors; the facade, chimneys and castellated parapet are seen from the street.

The Old Registry Office is one of only two government buildings in New South Wales designed in the Victorian Free Gothic style; the other is the Lands Titles Office on Prince Albert Road. It was occupied by the Registrar General in 1860, before the building was finished.