Festival dijadwalkan dari 22 Jul hingga 24 Jul 2011 (2 hari).
Tomorrowland berlangsung di Boom, Belgium. Berikut adalah alamat lengkap festival: Tomorrowland 2850 Boom, Belgium
David Guetta, Tiësto, Above & Beyond, Steve Aoki, Alesso, Swedish House Mafia, Faithless, Dimitri Vegas & Like Mike, Afrojack, Cosmic Gate, Astrix, Carl Cox, Don Diablo, Richie Hawtin, Kaskade, Paul van Dyk, Markus Schulz, Ferry Corsten, Groove Armada, Marco Carola.
Genre dan sub-genre yang paling populer dari edisi sebelumnya adalah:
electronic
pop
rock
house
electronica
techno
dance
trance
electro
progressive house
minimal
electro house
tech house
minimal techno
club
deep house
progressive trance
hardstyle
progressive