Trafalgar Dock is a dock on the River Mersey, in England, and part of the Port of Liverpool. It is situated in the northern dock system in Vauxhall and connected to Salisbury Dock to the north. The sites of two former docks are located in the vicinity; Victoria Dock was located to the south and Clarence Dock to the east. Trafalgar Dock was designed by Jesse Hartley and opened in 1836.