Clarence Dock was a dock on the River Mersey, England, and part of the Port of Liverpool. Situated in the northern dock system in Vauxhall, it was connected to Trafalgar Dock.

Designed by Jesse Hartley, the dock opened on 16 September 1830. Clarence Dock was named after William, Duke of Clarence, who became William IV.

It was built as a self-contained steamship dock facility. This was to avoid the risk of fire to wooden-hulled sailing vessels then using the other docks.

The dock was the principal berth for the Irish ferry ships. During the Irish famine in the 1840s over 1.3 million Irish people travelled through the dock. After many weeks or months, many took a ship to America from Waterloo Dock, there being fewer direct sailings to America from Ireland at this time. However many thousands made their home in Liverpool. Others moved to London and other British towns and cities in search of work.

The dock closed in 1928, and in 1929 was filled in when the site was redeveloped as power station.

Clarence Dock power station was constructed for Liverpool Corporation in 1931 to be an integral part of the local electricity grid system supplying electricity throughout Liverpool. The station plant comprised a low pressure station (No. 1) and a later high pressure station (No. 2) both based on coal-fired, water tube boilers and steam turbine driven alternators.

The plant in the low pressure station (installed 1931–32) comprised:

Boilers (all coal-fired)