Seven ships of the Royal Navy have been named HMS Princess, HMS Princesse or HMS Princessa:
HMS Princesse was a 54-gun fourth rate launched in 1660 and broken up in 1680.
HMS Princess was a 90-gun second rate launched in 1682 as HMS Ossory. She was renamed HMS Prince in 1705, HMS Princess in 1716 and HMS Princess Royal in 1728. She was broken up in 1773.
HMS Princess was a 70-gun third rate, originally the Spanish ship Princessa. She was captured in 1740, hulked in 1760 and sold in 1784.
HMS Princessa was a 70-gun third rate, originally the Spanish ship Princessa. She was captured in 1780, became a sheer hulk in 1784 and was broken up in 1809.
HMS Princess was a 28-gun sixth rate, originally the Dutch East Indiaman Williamstadt en Boetzlaar. She was captured in 1795 and became a 26-gun floating battery in 1800. She was sold in 1816.
HMS Princess was former SS Kronprincess Cecilie, launched in 1905. Captured in 1914, she was renamed as Princess and used as a dummy for HMS Ajax
HMS Princess was a hired patrol vessel which sank in 1940 after a collision
In addition, many ships have been named after specific princesses, including:
HMS Princess Alice
HMS Princess Amelia
HMS Princess Anne
HMS Princess Augusta
HMS Princess Carolina
HMS Princess Caroline
HMS Princess Charlotte
HMS Princess Louisa
HMS Princess Margaret
HMS Princess Maria
HMS Princess Mary
HMS Princess of Orange
HMS Princess Royal
HMS Princess Sophia Frederica
