Hempfest may refer to: Emerald Empire Hempfest, held annually in Eugene, Oregon, since 2003 Great Midwest Marijuana Harvest Festival, also called Harvestfest, or Hempfest, held annually in Madison since 1971 Missoula Hempfest, held annually since 1996 Moscow Hemp Fest, Idaho event held annually since 1996 Olympia Hempfest, held annually since 2004 Salem Hempfest, held annually since 2015 Seattle Hempfest, held annually since 1991