The Glasspack is an American psychedelic punk rock band from Louisville, Kentucky, United States. The band was formed in 1999 by frontman and native Louisvillian "Dirty" Dave Johnson, in hopes of giving a better alternative to the classic and hard rock played over-and-over on the radio. The Glasspack has since recorded one garage EP, two garage albums, two studio albums, and numerous cover songs, as well as toured the U.S. relentlessly. Three of the LPs were released on Detroit's Small Stone Records. The band takes its name from the high-flow fiber-glass filled automobile muffler known as a glasspack, which are known for being louder than traditional mufflers.

The band's music from their 2004 release Bridgeburner has been featured in MTV shows Viva La Bam (Season 3, Episodes 7&8) and Homewrecker (Season 1, Episodes 104&107). Also the band's music from their 2007 release Dirty Women was used in FX's motorcycle club television show Sons of Anarchy (Season 2, Episode 209). The band also has tracks from its 2002 Powderkeg release in video games MLB 2K and Amped 3, both made by 2K Sports. Amped 3 came with the package release of the Xbox 360.

The band's 2007 album, Dirty Women from Small Stone Records, landed them a sold-out headlining spot for their first trip to Europe at Netherlands' Roadburn Festival on April 20, 2008. The festival was sponsored by Roadburn magazine and Terrorizer and took place annually at the 013 Pop Centre in Tilburg.

The Glasspack was included in the internationally distributed book Rock Detector: A to Z of Doom, Gothic & Stoner Metal, published in 2003 by Cherry Red Books.