Six ships of the Royal Navy have borne the name HMS Cossack, after the Cossack people of Eastern Europe, whilst another was begun but was cancelled while building:
HMSCossack(1806) was a 22-gun sixth-ratepost-ship, begun under the name Pandour in 1805, but renamed before being launched in 1806. She was broken up in 1816.
HMS Cossack was to have been a steam gunvessel, laid down at Portsmouth Dockyard in 1846, but cancelled in May 1849.
HMSCossack(1854) was ordered as the Russian ship Witjas, a wood screw corvette building on the Thames at Northfleet, but the British government seized her while she was under construction in 1854; she was sold in 1875.
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.