The third USS Morris was a schooner in the United States Navy in commission in 1846. She was named for Robert Morris, a Founding Father, Continental Congressman, and major financier of the American Revolutionary War.

Morris served as a despatch boat during the Mexican War, going into service early in 1846. She was wrecked in a hurricane off Key West, Florida on 11 October 1846.

 This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.

24°22′22″N 82°08′48″W / 24.3727°N 82.1467°W / 24.3727; -82.1467