Четвертый фестиваль Рок в Рио, состоялся 23, 24, 25, 29 и 30 сентября, и 1 и 2 октября 2011 года на его исторической родине, в Рио-де-Жанейро.
В 2012 году фестиваль состоялся в Лиссабонне и Мадриде.
Лиссабонн:
25.05
Palco Mundo: Metallica, Evanescence, Mastodon, Sepultura, Tambours Du Bronx
Palco Sunset: Kreator + Andreas Kisser, Mão Morta + Pedro Laginha, Ramp + Teratron
Eletrónica Heineken: Chase and Status, DJ Set & Rage, Dr Lectroluv, Life is a Loop, Leo Janeiro, Tha lovely Bastards (Mad Mac and Nuno Lopes), Bis Boys Please, MC Johnny Def
26.05
Palco Mundo: Linkin Park, Smashing Pumpkins, The Offspring, Limp Bizkit
Palco Sunset: Xutos & Titas, Mafalda Veiga & Marcelo Jeneci, Rita Redshoes & Moreno Veloso
Eletrónica Heineken: Azari & III, The Magician, Punks Jump Up, The Discotexas Band, Miguel Quintão, Mirror People (Rui Maia/X Wife), MC Johnny Def
1.06
Palco Mundo: Lenny Kravitz, Maroon 5, Ivete Sangalo, Expensive Soul
Palco Sunset: Boss Ac & Zé Ricardo + Paula Lima, Orelha Negra + Hyldon + Kassin, Black Mamba & Tiago Betencourt
Eletrónica Heineken: Jamie Jones, Maceo Plex, Dyed Soundorom, Kings of Swingers (Renato Rathier + Mau Mau), Magazino, José Belo + Zé Salvador, MC Johnny Def
2.06
Palco Mundo: Stevie Wonder, Bryan Adams, Joss Stone, The Gift
Palco Sunset: Luis Represas & Joao Gil & Jorge Palma, Amor Electro & Moska, Ana Free + The Monomes
Eletrónica Heineken: Masters at Work (Louie Vega + Kenny Dope Gonzales), The Martinez Brothers, JohnWaynes Live DJ, Miguel Rendeiro, DJ Poppy, MC Johnny Def
3.06
Palco Mundo: Bruce Springsteen & The E Street Band, Xutos & Pontapés, James, Kaiser Chiefs
Palco Sunset: Rui Veloso + Erasmo Carlos, David Fonseca + Convidado, Carminho + Convidado
Eletrónica Heineken: DJ Harvey, DJ Vibe, Dop Live, DJ Dixon, Stereo Addiction, Mc Johnny Def
Мадрид:
30.06
Maná, Lenny Kravitz, Luciano, Macaco
5.07
Swedish House Mafia, Calvin Harris
6.07
David Guetta, Pitbull, Erick Morillo, Pete Tong, Afrojack, Wally Lopez, Martin Solveig
7.07
Red Hot Chili Peppers, Incubus, Gogol Bordello, Deadmau5