HMS Sealark was a Royal Navy Cuckoo-class schooner armed with four 12-pounder carronades and manned by a crew of 20.

She was commissioned in October 1806 under Lieutenant Thomas Banks for service in the North Sea.

Sealark was at the surrender of the Danish Fleet after the Battle of Copenhagen on 7 September.

The prize money amounted to £3 8s for an ordinary seaman, or slightly over two months wages.

[4] On 29 June 1809 The Times printed the following: "The Sealark schooner has been upset on the coast of Holland and all hands on board, excepting one man, unfortunately perished.