HMS Acasta was a 40-gun Royal Navy fifth-rate frigate. She saw service in the French Revolutionary and Napoleonic Wars, as well as the War of 1812. Although she never took part in any notable single-ship actions nor saw action in a major battle though she was at the Battle of San Domingo, she captured numerous prizes and rid the seas of many Spanish, French, and American privateers. She was finally broken up in 1821.

The Battle of San Domingo was a naval battle of the Napoleonic Wars fought on 6 February 1806 between squadrons of French and British ships of the line off the southern coast of the French-occupied Spanish colonial Captaincy General of Santo Domingo in the Caribbean.