Prince's Half-Tide Dock on the River Mersey, England, is a half tide dock and part of the Port of Liverpool. It is situated in the northern dock system in Vauxhall, connected to East Waterloo Dock and West Waterloo Dock to the north and Prince's Dock to the south.

The dock opened in 1810 and consisted of a lock entrance from the Mersey. This passage has since been closed off. The dock was rebuilt in 1868 by George Fosbery Lyster.

In 2007, work began on a £20 million extension of the Leeds and Liverpool Canal, providing a further 1.4 mi (2.3 km) of navigable waterway and encompassing Prince's Half-Tide Dock. A new lock, and fixed bridge, was built at the entrance to the adjoining Prince's Dock. The dock was partly filled in to reduce its depth.

The area surrounding Prince's Half-Tide Dock forms part of the proposed multi-billion pound Liverpool Waters development; a series of towers is planned to be built around the dock.

Prince's Half-Tide Dock is the proposed location of the new £3.5 million Isle of Man Steam Packet Company ferry terminal, which will replace the existing facility at Pier Head, which is "nearing the end of its operational life" according to the report placed before Tynwald (the Isle of Man parliament). The proposals were discussed before Tynwald on 19 July 2016.

• Pollard, Richard; Pevsner, Nikolaus (2006). Lancashire: Liverpool and the South West. Yale University Press. ISBN 9780300109108. OCLC 63396571.

• "Liverpool North Docks diagram". Archived from the original on 6 January 2009.