Sky Hook was a fanzine published by Redd Boggs in the 1940s and '50s in the U.S.A.
Writers for Sky Hook included Poul Anderson, James Blish (The Planeteer), writing as himself and as William Atheling, Jr., Virginia Blish (nee Virginia Kidd) (Snarl, Kinesis), Robert Bloch, John Chapman, Walter Coslet (The Scientifictionist), Philip Jose Farmer, Dean Grennell (Filler, Grue), Terence Heywood, Lee Hoffman (Quandry), David H. Keller, Damon Knight (Snide), Henry Kuttner, Noel Loomis, Robert Lowndes, Sam Moskowitz (Helios), Con Pederson (IF!), Phil Rasch, Oliver Saari, Jack Speer (The National Fantasy Fan), Ken Tuttle, and Walt Willis (Slant, Hyphen).
Artists featured were Richard Bergeron (Warhoon), Jerri Bullock (Fan Artisan), Eugene Calewaert (Eclipse), Terry Carr (Innuendo), Henry Chabot, Bob Dougherty, Ed Emshwiller, Dean Grennell, Lee Hoffman, Howard Miller (Dream Quest), Randall Nelson, Bill Rotsler, and Maril Shrewsbury.
Twenty-five issues were published during its run. The last issue of Sky Hook was published in Autumn 1957.
Redd Boggs was also the publisher of Ad Lib, Astounding Story Key, Astronaut (with Robert L. Stein), Caprice, Chronoscope, Discord, Fanspeak (with Art Rapp and Lee Hoffman), FAPA Potlach, Futurist, Gafia Poetry Leaflet, Gafia Press Style Book, Hurkle, The Lovecraftsman, Pro-phile, Tympani (with Bob Stein), and many others. In the early 1950s, Boggs was also the official editor of The Fantasy Amateur, the official organ of the Fantasy Amateur Press Association.