Edward John Moreton Drax Plunkett, 18th Baron Dunsany (24 July 1878 – 25 October 1957), commonly known as Lord Dunsany, was an Anglo-Irish writer and dramatist. He published more than 90 books during his lifetime, including hundreds of short stories, plays, novels, and essays, with further works published posthumously.

He gained fame in the 1910s as a writer in the English-speaking world and is best known for the 1924 fantasy novel The King of Elfland's Daughter and his first book, The Gods of Pegāna, which depicts a fictional pantheon. Many critics believe his early work laid the groundwork for the fantasy genre.

Born in London as the heir to one of the oldest Irish peerages, he was raised partly in Kent but later lived mainly at Ireland's possibly longest-inhabited home, Dunsany Castle near Tara. He collaborated with W. B. Yeats and Lady Gregory and supported the Abbey Theatre and other writers. A chess and pistol champion of Ireland, he also travelled and hunted widely. He even devised an asymmetrical game called Dunsany's chess.

Later in life, he was awarded an honorary doctorate from Trinity College Dublin and settled in Shoreham, Kent, in 1947. In 1957, he fell ill while visiting Ireland and died in Dublin of appendicitis.