File 770 is a science fiction fanzine by Mike Glyer.
File 770 is published in Sierra Madre, California, U.S.A. The first issue appeared in January 1978, and has appeared regularly since then, with 160 issues published in that time.
The fanzine includes fandom news and commentary, convention reports, reports on awards, articles and lots of artwork, photographs, and letters.
Contributing artists include Alan Beck, Harry Bell (Grimwab), Grant Canfield, Ray Capella, John DeChancie, Kurt Erichsen, Brad Foster, Steven Fox, Jennifer Gates, Alexis Gilliland, Teddy Harvia, R'ykandar Korra'tic, Tim Marion, Sue Mason, Joe Mayhew, Ray Nelson, Scott Patric, Marie Rengstorff, Bill Rotsler, Steve Stiles, ATom (The ATom Anthology), Taral Wayne (DNQ), Len Wein, and Alan White.
Contributing writers include James Bacon (Journey Planet), Marty Cantor (No Award), Chris M. Barkley, Steve Francis, Sue Francis, Chris Garcia (The Drink Tank), Lee Gold, Steve Green, Francis Hamit, John Hertz, Keith G. Kato, Robert Lichtman (Trap Door), Dennis Lien, John Novak, Andrew I. Porter (Algol), Patricia Rogers, Espana Sheriff (Science Fiction / San Francisco), Dick Smith and Leah Zeldes Smith (Stet, Contact!), Joy V. Smith, Dale Speirs (Opuntia), Keith Stokes, John King Tarpinian, Bjo Trimble (Shangri L'Affaires), Taral Wayne, and Martin Morse Wooster.
Contributing photographers include Kenn Bates, Marty Cantor, Diana Glyer, Mike Glyer, Francis Hamit, Lynn Maudlin, Helen Montgomery, Bruce Pelz, Andrew Porter, Robert Sawyer, Ian Sorensen, Keith Stokes, Leigh Strother-Vien, and John King Tarpainian.
Letters come from Jerry Kaufman (Littlebrook), George Laskowski (Lan's Lantern), Joseph T. Major (Alexiad), Lloyd Penney (Torus), Joy V. Smith, Harry Warner, Jr. (Horizons) and Henry Welch (The Knarley Knews).
File 770 has won the Hugo Award for Best Fanzine five times, for the years 1989, 2000, 2001, 2008 and 2016.
Mike Glyer also co-published Fanthology 1986 with Pat Mueller Virzi and Dennis Virzi.