Science Fiction, Fantasy and Horror

Clarkesworld Books - New, used, and collectible science fiction, fantasy, and horror books.
http://www.clarkesworld.com/books/

UsedSciFi.com - Store for second-hand science fiction books.
http://www.usedscifi.com/

Dynamic Pulps - Sells classic science fiction and fantasy magazines. Worldwide shipping.
http://www.reynoldswitham.dsl.pipex.com

Rown's Books - Specializes in used and out of print books by and about J.R.R. Tolkien. Has extensive stock in collectible science fiction and fantasy, mythology and folklore, and Native American studies.
http://www.rowns.com

Larry's Sci-Fi-Spy Media Catalog - Books and media material on related movies and TV series.
http://www.scifispy.com/

Science Fiction Plus - Buys, sells, and swaps science fiction magazines, books, from the 1920s to the 1980s.
http://web.ukonline.co.uk/science.fiction/Page_1x.html

Crooked Dreamer Books - Books in all genres, but specializes in science fiction, fantasy, and mystery.
http://crooked-dreamer.com/

S. Howlett-West Books - Offers books in all genres, but specializes in science fiction, fantasy, and horror.
http://www.showlettwestbooks.com/

Lost and Bound - Used book store specializes in science fiction and fantasy. Includes MAD, Star Trek, and comic books.
http://www.lostandbound.com/

Thompson Rare Books - Deals in literary first editions, fantasy, mythology and folklore, detective fiction and mysteries, illustrated books, children's books, and fine printing and bindings.
http://www.mjtbooks.com/

Other Worlds Bookstore - Specializes in used and out of print science fiction, fantasy, and horror. Also sells pulp and digest sized magazines.
http://otherworldsbookstore.com

Fantastic Literature - Secondhand science fiction and fantasy booksellers, specializing in out of print and hard to find science fiction, fantasy, and horror books in paperback and hardcovers.
http://www.fantasticliterature.com/

Maxi's Mini Mart - Used books offered, mainly science fiction books and magazines.
http://www.shop.dayala.co.uk/

Cold Tonnage - Specializes in new and out of print, collectible science fiction, fantasy, horror and the supernatural first editions. Offers hardcovers, vintage paperbacks, pulps, and magazines.
http://www.coldtonnage.com/

Pandora's Books - Stocks primarily science fiction, fantasy, horror, mystery, private eye, and spy thriller books. Located in Canada.
http://www.pandora.ca/

De Warehouse - Specializes in German science fiction, including Perry Rhodan, and Atlan. Order by email.
http://www.de-warehouse.com/

Roses Are Read Books - Sells a variety of new, used and antique books. Specialties include science fiction, fantasy, horror, mystery, history, and historical fiction.
http://www.RosesAreReadBooks.com

Papaseraphim Books For Sale - Specializes in science fiction, fantasy art and illustration, Stephen King, and Star Trek books.
http://www.patriki.com/sf/

Camelot Books - Offers both new and used books in science fiction, fantasy, and horror. Specializes in Stephen King. Offers lay-a-way program.
http://www.camelotbooks.com/

Starone SciFi Store - Used science fiction, fantasy, and horror books and collectibles. Order by email.
http://scifi-store.tripod.com/

J. Yeager Books - New, used, and rare books with emphasis on science fiction, fantasy, and horror.
http://www.jyeagerbooks.com/

Colophon Books - Specializes in science fiction, fantasy, Tolkien, and horror. Searches available.
http://www.colophonbooks.us/

Top Shelf Books - Collectible science fiction, fantasy, horror and mystery hardcover first editions.
http://www.topshelfbooks.com/

The Missing Volume - Online dealer in used, signed, and out of print science fiction, fantasy, horror, and fiction hardcovers and paperbacks.
http://www.themissingvolume.com

Dark Hollow Books - Specializes in rare, out of print, and hard to find science fiction and fantasy genre books. Carries titles from many of the small presses.
http://www.darkhollowbooks.com/

Barry R. Levin - Deals in science fiction, fantasy, and horror with a strong emphasis on autographs, manuscripts, literary correspondence, and original art.
http://www.raresf.com/bhome.html

White Unicorn Books - Internet only bookstore specializing in science fiction and fantasy but with other fine books.
http://www.whiteunicornbooks.com/

Kayleighbug Books - Specializes in all types of science fiction and fantasy.
http://www.kayleighbug.com/

Winston Science Fiction Classics - Series of juvenile hardcover books published in the 1950s and early 1960s. Authors such as Jack Vance, Arthur C. Clarke, and Ben Bova.
http://home.att.net/~maychap/

SciFiFantasyBooks - Specializes in out of print, used, secondhand, and other hard to find fantasy and science fiction books.
http://www.scififantasybooks.com/