The Year's Best Fantasy Stories: 4 is a 1978 anthology of fantasy stories, edited by Lin Carter. It was first published in paperback by DAW Books. The book collects eleven novelettes and short stories by various fantasy authors, originally published in the years 1977 and 1978 that were deemed by the editor the best from the period represented, together with an introductory survey of the year in fantasy, an essay on the year's best fantasy books, and introductory notes to the individual stories by the editor. The pieces include a pseudonymous work (the story by "Grail Undwin", actually by Carter) and "posthumous collaborations" (the story by Howard and Offutt and the story by Smith, which was completed by Carter).