Unknown Worlds: Tales from Beyond

Unknown Worlds: Tales from Beyond is an anthology of fantasy fiction short stories edited by Stanley Schmidt and Martin H. Greenberg, the sixth of a number of anthologies drawing their contents from the American magazine Unknown of the 1930s-1940s. It was first published in hardcover by Galahad Books in 1989, though bearing a copyright date of 1988, and reprinted by Bristol Park Books in 1993.

The book collects twenty-five tales by various authors, together with an introduction by Schmidt.