Three ships of the Royal Navy have borne the name HMS ''Ossory'', after the Kingdom of Osraige, Kingdom of Ossory, in Ireland, or possibly Thomas Butler, Earl of Ossory:
* was 90-gun second-rate ship of the line launched in 1682. She was renamed HMS ''Prince'' in 1705, HMS ''Princess'' in 1716 and HMS ''Princess Royal'' in 1728. She was broken up in 1773.
* was an , launched in 1916 and sold for scrap in 1921.
* was an launched in 1944 and broken up in 1959.
In addition: ''Ossory'' was a ship that Lieutenant John Tyrrell (RN) commanded for a voyage from Bengal to London in 1792–1794, and whose log book is in the India Office Library. No other data seems to exist for this vessel.
{{DEFAULTSORT:Ossory, Hms
Royal Navy ship names