HMS Shelanagig (or Sheelanagig, or other variants), was a sloop of 16-guns purchased in the West Indies in 1780 for the Royal Navy. She was under the command of James Shepherd, (or Keith Shepherd, or Commander J.K. Sheppard), and her Second Lieutenant was Home Popham. French records indicate that Shelanagig's ultimate fate is unknown. British records do report that the West India squadron recaptured the sloop Schelanagig, of 16 guns, in 1782, but do not report a subsequent disposition.