HMS Nemesis was a 46-gun Seringapatam-class fifth-rate frigate built for the Royal Navy during the 1820s, one of four ships of the Druid sub-class.

The Druid sub-class was an enlarged and improved version of the Serinapatam design, modified with a circular stern.

[2] The Druid sub-class was armed with twenty-eight 18-pounder cannon on her gundeck, fourteen 32-pounder carronades on her quarterdeck and a pair of 9-pounder cannon and two more 32-pounder carronades in the forecastle.

[3] Nemesis, the second ship of her name to serve in the Royal Navy,[4] was ordered on 23 July 1817, laid down in August 1823 at Pembroke Dockyard, Wales, and launched on 19 August 1826.

[3] She was completed for ordinary at Plymouth Dockyard in September 1826 and the ship was roofed over from the mainmast forward.