At least four vessels of the Royal Navy have borne the name HMS Mullett, Mullet, or Mulette.
Mulette or Mullet was the French vessel Mulet launched c.May 1782 based on plans by Jean-Joseph Ginoux, originally classed as a barge and then as a flûte (1784). She was armed with eighteen to twenty 6 or 8-pounder guns. The British captured her at Toulon in 1793 and commissioned her as the sloop Mulette (or Mullet). She was broken up in 1796.Mullett was a Ballahoo-class schooner that was built in Bermuda and launched in 1807. She was sold in 1814.Mullett was a Philomel-class wooden screw gunvessel launched in 1860, sold on 25 April 1872 at Hong Kong for mercantile use and renamed Formosa.Mullett was a Fish-class ASW trawler launched in 1942 and sold in 1946.