The Liverpool Maritime Mercantile City is a UNESCO designated World Heritage Site in Liverpool, England. It comprises six locations in the city centre of Liverpool including the Pier Head, Albert Dock and William Brown Street, and includes many of the city's most famous landmarks.

UNESCO received the city council's nomination for the six sites in January 2003 and in September of that year sent ICOMOS representaitves to carry out an evaluation on the eligibility for these areas to be given World Heritage Status. In March 2004 ICOMOS recommended that UNESCO inscribe the Liverpool Maritime Mercantile City as a World Heritage Site.

The area was inscribed during the 28th session of the World Heritage Committee in 2004 under cultural criteria ii, iii and iv. Its inclusion by UNESCO was attributed to the fact that it was 'the supreme example of a commercial port at a time of Britain's greatest global influence'.