"The World Well Lost" is a science fiction short story by American writer Theodore Sturgeon, first published in the June 1953 issue of Universe. It has been reprinted several times, for instance in Sturgeon's collections E Pluribus Unicorn, Starshine, and A Saucer of Loneliness. The story takes its title from the subtitle of John Dryden's verse drama All for Love.

Theodore Sturgeon was an American fiction author of primarily fantasy, science fiction, and horror, as well as a critic. He wrote approximately 400 reviews and more than 120 short stories, 11 novels, and several scripts for Star Trek: The Original Series.