HMS Confiance was a 36-gun fifth-rate frigate that served in the Royal Navy on Lake Champlain during the War of 1812. Confiance served as Captain George Downie's flagship at the Battle of Plattsburgh, on 11 September 1814. Surrendered to the American Squadron following a nearly 2½ hour battle, she was eventually taken to Whitehall, New York where she was taken into the U.S. Navy and placed in ordinary. The vessel was formally abandoned by the Navy in 1820 and after being partially salvaged, was allowed to sink at her moorings. As a danger to navigation, the sunken hulk was destroyed with dynamite charges during dredging operations on the channel in 1873.

The Battle of Plattsburgh, also known as the Battle of Lake Champlain, ended the final British invasion of the northern states of the United States during the War of 1812. Two British forces, an army under Lieutenant General Sir George Prévost and a naval squadron under Captain George Downie converged on the lakeside town of Plattsburgh, New York. Plattsburgh was defended by New York and Vermont militia and detachments of regular troops of the United States Army, all under the command of Brigadier General Alexander Macomb, and ships commanded by Master Commandant Thomas Macdonough.