HMS St Mary

Three ships of the Royal Navy have borne the name HMS St Mary or HMS St Marys:


 * HMS St Mary (1299) was a cog in service with the Cinque Ports in 1299.
 * HMS St Mary (1626) was a ship purchased in 1626 and given away in 1628.
 * HMS St Marys was a Town-class destroyer, previously the United States Navy USS Doran, which had been launched as USS Bagley (DD-185). She was transferred to the Royal Navy in 1940 and was sold for scrapping in 1945.