volgorde:
|
| 1/4 of a Century | 4  | Calypso, Rotterdam |
| Bram Vank, Chris Cowie, Many Moore alias Miezz!, Misja Helsloot, Roland K., San, Suzy Solar |
| Boulevard | 1 | Boulevard, Veghel |
| Club Risk · Steam!Up | 6 | Winkel van Sinkel, Utrecht |
| Eric de Man, Erick E |
| Hammertime | | Mandarin Club, Sydney |
| Geoff Da Chef, Negative Network |
| Hardcore Experience | 78 | Opa Kees, Goes |
| Dione, Excess, Lunatic, Miss Hysteria, Tommy Chaos |
| Hardlevel | 4 | The Level, Arnhem |
| Deepack, Impaq, Michael |
| Hardstyle Overdose | 53 | Jongerencentrum De Postbrug, Den Helder |
| Avanish, Brainwave, Devesh, Trilok & Chiren |
| Hardstyle Selected | 22 | Club Selected, Delft |
| D.C. Bell, Defact, Hayo, Thilo |
| Intensive | 29 | Atlantic, Krommenie |
| Bernd |
| Kacabaja Open Air 2003 | 1 | Open Air Area Kacabaja, Hodslavice |
| IM Cyber, Koogi, Martin Kremser |
| Lift Off · Obsession | | Poppodium Atlantis, Alkmaar |
| Eerio, Tim Tyler, Translactica |
| Lunenburg | 18 | Lunenburg, Loosbroek |
| Johan Gielen, Marco V |
Nature One 2003  | 1415 | Raketbasis Pydna, Kastellaun |
| ACCT, Adam Beyer, Alex B, André Galluzzi, Anthony Rother, Aquasky, Audiotechture, Baas, Babor, Blank & Jones, Boris Dlugosch, Carlos Manaça, Cess, Chris Liebing, Christian Hühn, Cosmic Gate, D-Lusion, DAG, Danilo Vigorito, Davide Squillace, en nog 64 andere artiesten →Deimos, Demom303, Dione, Dr. Z-Vago, Dumonde, E-Noid, Eddie Amador, Errikk, Frank Lorber, Funk d'Void, Gayle San, GID, Gush Collective, Hakan Lidbo, Hardfloor, Jacek Sienkiewicz, Jan Liefhebber, Jef K, JNM, Jori Hulkkonen, Junior Sanchez, Justin Berkovi, K-Paul, Kai Tracid, Karotte, Kommander Keen, Legowelt, Lexy, M-Pire, Machomovers, Marco Remus, Marco V, MOGUAI, Monika Kruse, Morbius, Negative A, Orchid, Paco Osuna, Paul Kalkbrenner, Paul van Dyk, Pauly, Phil Fuldner, Renato Cohen, Ricardo Villalobos, Rush, Sasha, Stanny Franssen, Sven Väth, T-Man, Tanith, Taucher, Technasia, The Advent, The Raver, Tillmann Uhrmacher, Tobi Neumann, Tok Tok vs Soffy O., Tomcraft, Toni Rios, Tryax, Tyson, Voodoo, Westbam, Yoyok |
| Oldschool Exprez | 29 | Palazzo, Zeist |
| Sick, The Snitch, Thomson |
| Q-beach · Summersoundz on Friday | 30 | Q-beach, Bloemendaal aan zee |
| Robert Smit, Spider |
| Retro Celebration Cherrymoon · Beach Edition | 18 | Oktoberhallen Wieze, Wieze |
| Alain Faber, Cherry Moon Trax, Dave Lambert, Frank Zolex, Franky Jones, Ghost, HS, Marko de la Rocca, Mike Thompson, Phi-Phi, Youri, Yves Deruyter |
| Summersets · Special | 1 | Mazzo, Amsterdam |
| Ian Carey, Mike van Loon |
| Thank Steve It's Friday | 25 | Club Coyotes, Rotterdam |
| Genius, The Darkraver, Thom-k, TMC |
