HMS Mersey

Five ships and a shore establishment of the Royal Navy have been named HMS Mersey after the River Mersey:

Ships
 * HMS Mersey (1814) was a Conway-class 26-gun sixth rate launched in 1814, used for harbour service from 1832, and broken up in 1852.
 * HMS Mersey (1858) was a wooden screw frigate launched in 1858 and sold in 1875.
 * HMS Mersey (1885) was a Mersey-class protected cruiser launched in 1885 and sold in 1905.
 * HMS Mersey (1914) was a Humber-class monitor launched in 1913 for Brazil, but purchased by the Royal Navy in 1914 and sold in 1921.
 * HMS Mersey (P283) is a River-class offshore patrol vessel launched in 2003 and currently in service.

Shore establishments
 * HMS Mersey (shore establishment) was the Navy's Liverpool depot, established as a branch of HMS Eaglet (shore establishment) and commissioned in 1940, and paid off in 1946.
 * HMS Mersey was the name borne by a number of tenders to the Liverpool Royal Naval Reserve
 * HM Motor minesweeper 1075 was HMS Mersey between 1949 and 1956.
 * HMS Amerton (M1105) was HMS Mersey between 1954 and 1959.
 * HMS Pollington (M1173) was HMS Mersey between 1959 and 1975.