The Pearl Jam Twenty Tour was a concert tour by the American rock band Pearl Jam to celebrate the band's 20th anniversary. The tour consisted of a two-day festival at the Alpine Valley Music Theatre in East Troy, Wisconsin on the Labor Day weekend, and was followed by ten shows in Canada, ending with a show at the Pacific Coliseum, Vancouver. The festival dates had support from Queens of the Stone Age, Mudhoney, Liam Finn, John Doe and The Strokes. Due to high ticket demand for pre-sale tickets, the website had to be taken offline.

Pearl Jam is an American rock band formed in Seattle, Washington, in 1990. The band's lineup consists of founding members Jeff Ament, Stone Gossard, Mike McCready, and Eddie Vedder, as well as Matt Cameron (drums), who joined in 1998. Keyboardist Boom Gaspar has also been a touring/session member with the band since 2002. Jack Irons, Dave Krusen, Matt Chamberlain and Dave Abbruzzese are all former drummers for the band. Pearl Jam has outsold and outlasted many of its contemporaries from the early 1990s, and is considered one of the most influential bands from that decade, dubbed "the most popular American rock and roll band of the '90s".