Science-Fiction Five-Yearly (SFFY) has been published every five years since 1951.
It was originally edited by Lee Hoffman and took on several different editors in several different roles over the following 55 years. Bob Toomey was the first Assistant Editor in 1971, and then Terry Hughes (Mota) in 1976, Dan Steffan (Boonfark) in 1981, and Patrick and Teresa Neilson Hayden (Izzard) in 1986, along with Art Director Stu Shiffman. Geri Sullivan (Idea) and Jeff Schalles (Rune) worked on issues #9 to #11, with Andy Hooper (Apparatchik) joining them for issue 10. Terry Hughes returned for issue #11. Editors for issue 12, Randy Byers (Chunga) and Geri Sullivan, have announced that issue 12 will be the final issue since Hoffman passed away early in 2007.
Among the contributors are Robert Silverberg (as Calvin Aargh), Greg Benford (Void), Robert Bloch, Claire Brialey (Banana Wings), Rich Coad, Harlan Ellison (as Nalran Nosille) (Science Fantasy Bulletin), Richard Eney (A Sense Of FAPA), Dean Grennell (Filler, Grue), Christina Lake (Head, This Never Happens), Walt Liebscher (Chanticleer), Denny Lien, Jeff Schalles, Robert Silverberg (Spaceship), Geri Sullivan, Bob Tucker (Le Zombie, Science Fiction Newsletter), Kip Williams, and Ted White (Stellar, Void).
Reprints from fanzine such as What About Us Grils?, and others, were also featured.
Science-Fiction Five-Yearly won the Hugo Award for Best Fanzine in 2007.