Henry De Vere Stacpoole (9 April 1863 – 12 April 1951) was an Irish author, born in Kingstown (now Dún Laoghaire). His best known work is the 1908 romance novel The Blue Lagoon, which has been adapted into feature films on five occasions. He also wrote under the pseudonym Tyler De Saix.
After a brief career as a ship's doctor, which took to him to numerous exotic locations in the South Pacific, later used in his fiction, he became a full-time writer, able to live comfortably after the success of 'The Blue Lagoon'.
He lived in the Essex countryside before moving to the Isle of Wight in the 1920s, where he remained until his death. He was buried at Bonchurch in 1951.