Quark is a science fiction fanzine published by Lesleigh Couch and Chris Couch in the 1960s.
Quark was published in St. Louis, Missouri, U.S.A. While it was science fiction fandom zine, it also became well known for its coverage of the rock music scene of the era as well.
Contributors of writing included Arnie Katz (Vegas Fandom Weekly), Georgina Ellis (Honque, Queebshots, Descant), Mike Novak writing about "The St Louis Rock Scene", Greg Shaw (Bomp) on music, Creath Thorne, and Ted White. Columns were by Jerry Kaufman, and Jim Reuss's "If You Don't Love Computers".
Contributors of art included Seth Dogramajian, Mike Gilbert and Gene Klein (later known as Gene Simmons of Kiss).
Quark was distributed by the Southern Fandom Press Alliance.
Lesleigh Couch went on to co-publish Starling with Hank Luttrell.