Many ships have borne the name Louisa:
Four ships of the Royal Navy have been named HMS Louisa, as have several hired armed vessels that served the Royal Navy under contract:
HM Hired armed brig Louisa
HM Hired tender Louisa
Louisa (Quasi-War privateer)
Louis. Privateer out of Baltimore, War of 1812.
Louisa. Privateer out of Buenos Aires, taken over by crew, October 1818, to be used for piracy.
Louisa. Whaling schooner, 35 tons (bm). Built at Hobart, 1834, foundered near Bruny Island, 22 October 1836. All hands lost.
