UsedSciFi.com - Store for second-hand science fiction books. - http://www.usedscifi.com/
Roses Are Read - Sells a variety of books and movies and specialties include science fiction, fantasy, and mystery. - http://www.rosesareread.biz
SciFiFantasyBooks - Specializes in out of print, used, secondhand, and other hard to find fantasy and science fiction books. - http://www.scififantasybooks.com/
White Unicorn Books - Internet only bookstore specializing in science fiction and fantasy but with other fine books. - http://www.whiteunicornbooks.com/
Maxi's Mini Mart - Used books offered, mainly science fiction books and magazines. - http://www.shop.dayala.co.uk/
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
Unique Editions Books - Genres range from science fiction and fantasy to religion. Specializes in book searches. - http://www.uniqueeditionsbooks.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
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
Dynamic Pulps - Sells classic science fiction and fantasy magazines. Worldwide shipping. - http://www.reynoldswitham.dsl.pipex.com
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/
Colophon Books - Specializes in science fiction, fantasy, Tolkien, and horror. Searches available. - http://www.colophonbooks.us/
Pandora's Books - Stocks primarily science fiction, fantasy, horror, mystery, private eye, and spy thriller books. Located in Canada. - http://www.pandora.ca/
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/
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/
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
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
De Warehouse - Specializes in German science fiction, including Perry Rhodan, and Atlan. Order by email. - http://www.de-warehouse.com/
Clarkesworld Books - New, used, and collectible science fiction, fantasy, and horror books. - http://www.clarkesworld.com/books/
Kayleighbug Books - Specializes in all types of science fiction and fantasy. - http://www.kayleighbug.com/
S. Howlett-West Books - Offers books in all genres, but specializes in science fiction, fantasy, and horror. - http://www.showlettwestbooks.com/
J. Yeager Books - New, used, and rare books with emphasis on science fiction, fantasy, and horror. - http://www.jyeagerbooks.com/
Lost and Bound - Used book store specializes in science fiction and fantasy. Includes MAD, Star Trek, and comic books. - http://www.lostandbound.com/
Crooked Dreamer Books - Books in all genres, but specializes in science fiction, fantasy, and mystery. - http://crooked-dreamer.com/
Top Shelf Books - Collectible science fiction, fantasy, horror and mystery hardcover first editions. - http://www.topshelfbooks.com/
Papaseraphim Books For Sale - Specializes in science fiction, fantasy art and illustration, Stephen King, and Star Trek books. - http://www.patriki.com/sf/
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/
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/