Decatur was an American schooner built in Charleston, South Carolina, in 1813 for privateering during the Atlantic Ocean theater of the War of 1812.

She was named for the United States Navy Commodore Stephen Decatur, who served with distinction in many of America's earliest conflicts.

Captain Diron defeated the stronger Royal Navy schooner HMS Dominica in an action off Bermuda on 5 August 1813.

After a long engagement the Americans chased down Dominica and boarded, forcing down her colors and killing her commander in the process.

Similarly, the merchantman Princess Charlotte, also in company and also armed, had observed the battle and when she saw that Dominica had surrendered, had herself escaped.