Under the Black Ensign is a Caribbean pirate adventure story written by L. Ron Hubbard and set in 1680. It was first published in the August 1935 issue of Five Novels Monthly magazine.
The story recounts the adventures of sailor Tom Bristol who is press-ganged into joining the crew of the HMS Terror, only to face 100 lashes by the British Navy. When the ship is overtaken by pirates, Bristol is marooned on an island, where he begins his quest for revenge and starts his career as a Caribbean pirate.
Under the Black Ensign is from the Golden Age series which Galaxy Press started re-publishing in 2008. The book has been re-released as a trade paperback, with French flaps, glossaries, and author bio. It is also available as a full-cast audiobook featuring Lori Jablons, R.F. Daley, Shane Johnson, Jim Meskimen and Tait Ruppert. Directed by Jim Meskimen.