HMS Edgar was a 74-gun third-rate ship of the line of the Royal Navy, that saw service in the American Revolutionary, French Revolutionary and Napoleonic Wars. Launched in 1779, she fought in the battles of Cape St Vincent and Copenhagen, two of the major naval engagements of the wars.

The Battle of Cape Spartel was an indecisive naval battle between a Franco-Spanish fleet under Admiral Luis de Córdova y Córdova and a British fleet under Admiral Richard Howe. These forces met on 20 October 1782 after Howe successfully resupplied Gibraltar, then under siege by Bourbon forces during the American Revolutionary War.