Far Boundaries is an anthology of science fiction stories edited by American writer and anthologist August Derleth. It was first published by Pellegrini & Cudahy in 1951. Many of the stories had originally appeared in the magazines Variety, Dublin Literary Magazine, Knight’s Quarterly Magazine, Scribner's, Astounding Stories, The Arkham Sampler, Planet Stories, Super Science Stories, Thrilling Wonder Stories, Startling Stories, The Magazine of Fantasy & Science Fiction, Blue Book and Galaxy.