The Wipers were a punk rock group formed in Portland, Oregon in 1977 by guitarist Greg Sage, drummer Sam Henry and bassist Dave Koupal. The group's tight song structure and use of heavy distortion has been hailed as extremely influential by numerous critics and musicians, including Melvins, Dinosaur Jr., Mono Men, Stephen Malkmus, Hole, Poison Idea, My Vitriol, Nation of Ulysses, and Nirvana.