HMS Comus was an 18-gun sloop, the name ship of her class, built for the Royal Navy during the 1820s.

[1] The Comet class was armed with a pair of 9-pounder cannon in the bow and sixteen 32-pounder carronades.

[2] Comus, the second ship of her name to serve in the Royal Navy,[3] was ordered with the name of Comet on 15 May 1821, laid down in October 1826 at Pembroke Dockyard, Wales, and launched on 14 August 1828.

[2] She was completed on 28 February 1829 at Plymouth Dockyard and commissioned in November 1828.

[4] On 25 September 1847, Comus was driven ashore and sank near Montevideo, Uruguay.