Two ships of the United States Navy have been named USS Ethan Allen in honor of Ethan Allen, the guerrilla leader of the Green Mountain Boys.
- The first was a bark that raided the Confederate States of America during the American Civil War.
- The second was the lead ship of her class of ballistic missile submarine that served during the Cold War.
Similar named
- SS Ethan Allen was a Liberty ship laid down by Bath Iron Works 7 January 1942, launched 16 August 1942 and scrapped 1960..