B
- Jim Baen (1943–2006), USA, editor and publisher; founded Baen Books(1983), Webscriptions (now Baen Ebooks), the Baen Free Library and Jim Baen's Universe webzine
- Hilary Bailey (born 1936), UK, editor of New Worlds anthologies #7-10.
- Harry Bates (1900–1981), USA, editor of Astounding Science Fiction, Strange Tales, and Weird Tales
- Jeff Berkwits, editor of Amazing Stories, 2005
- John Betancourt (born 1963), USA, founded Wildside Press; edited Weird Tales; SF editor for Byron Preiss Books
- Sir Charles Lloyd Birkin (1907–1986), UK, editor of the Creeps Library of horror fiction anthologies (1932–1936)
- Caitlin Blasdell, USA, formerly editor at HarperCollins and Avon Books, now a literary agent
- Everett F. Bleiler (1920–2010), USA, anthologist, usually with T. E. Dikty
- Kyril Bonfiglioli (1929–1985), UK, editor of Science Fantasy magazine
- Anthony Boucher (1911–1968), USA, founding editor of The Magazine of Fantasy & Science Fiction
- Ben Bova (born 1932), USA, writer, editor of Analog Science Fiction and Fact (1971–1978); fiction editor of Omni Magazine (1978–1982)
- Stacy Boyd, USA, romance editor, Harlequin Luna (2001–present),
- Marion Zimmer Bradley (1930–1999), USA, writer, founder and editor of Marion Zimmer Bradley's Fantasy Magazine
- Jennifer Brehl, USA, senior editor at HarperCollins
- Kent Brewster, (born 1961), USA, editor of Speculations
- Damien Broderick, (born 1944), Australia/USA, SF editor for Australian popular science bi-monthly Cosmos
- Keith Brooke, (born 1966), UK, author, anthologist, publisher of Infinity Plus
- Charles N. Brown (1937–2009), USA, founder and editor of Locus news magazine
- Howard Browne (1908–1999), USA, editor of Amazing Stories (1950–1956)
- Ginjer Buchanan (born 1944), USA, Editor-in-Chief of Berkley-Ace-Roc Books
- Algis Budrys (1931–2008), USA, writer, juror and editor of the Writers of the Future contest and anthology series, editor and publisher Tomorrow Speculative Fiction 1993-2000
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