HMS Ontario can refer to several ships:
Eighteen ships of the Royal Navy have borne the name Hunter:
Seven ships of the British Royal Navy have been named HMS Kangaroo, after the kangaroo.
Several ships of the Royal Navy have been named HMS Nautilus, after the Greek word for a sailor, including:
Ten ships of the Royal Navy have been named HMS Pandora after the mythological Pandora. Another was planned, but the name was reassigned to another ship:
Six ships of the Royal Navy have been named HMS Foxhound. A seventh was planned but never completed:
The following ships of the Royal Navy were assigned the name Calypso, after Calypso, a sea nymph in Greek mythology:
Fifteen ships and two shore establishments of the Royal Navy have borne the name HMS Ferret, after the domestic mammal, the Ferret:
Six ships of the Royal Navy have borne the name HMS Albatross, after the seabird, the albatross. A seventh was planned but never completed:
Nine ships and a base of the Royal Navy have borne the name HMS Curlew after the bird, the curlew:
Eleven ships of the Royal Navy have borne the name HMS Cruizer or HMS Cruiser:
Seven ships of the Royal Navy have borne the name HMS Chameleon, or the archaic variants HMS Cameleon or HMS Camelion, after the Chameleon:
Ten ships of the Royal Navy have borne the name HMS Mutine :
Seven ships of the Royal Navy have borne the name HMS Harrier:
Seven ships of the Royal Navy have borne the name HMS Penguin. A penguin is a flightless aquatic bird.
Eleven ships of the Royal Navy have borne the name HMS Star or HMS Starr:
Thirty-nine vessels of the Royal Navy and its predecessors have borne the name Swallow, as has one dockyard craft, one naval vessel of the British East India Company, and at least two revenue cutters, all after the bird, the Swallow:
Ten ships of the Royal Navy have borne the name HMS Confiance:
Seventeen ships of the Royal Navy have borne the name HMS Dispatch, or the variant HMS Despatch:
Five ships of the Royal Navy have borne the name HMS Childers:
Seven vessels of the British Royal Navy have been named HMS Espoir, after the French word for "hope":