Three, and possibly four, vessels of the Royal Navy have borne the name HMS Placentia, after locations in Newfoundland, including Placentia Bay and the town of Placentia:
HMS Placentia was a 6-gun schooner purchased in 1775 and wrecked, with the loss of two lives, on 14 September 1775.
A cutter HMS Placentia apparently served between 1777 and 1779.
HMS Placentia was a 14-gun sloop, purchased in 1780 and wrecked on 10 September 1782 on Newfoundland with no survivors.
HMS Placentia was a minimally armed sloop, name vessel of her two-vessel class, launched in 1789, that her crew abandoned in a sinking state on 8 May 1794 off Marticot Island, Newfoundland.
