Folgende Bands spielten auf dem W:O:A 2003:
| BAND | LAND |
| Ancient Rites | Belgium |
| Annihilator | USA |
| Assassin | Germany |
| Bai Bang | Sweden |
| Callenish Circle | Netherlands |
| Carpathian Forest | Norway |
| Circle II Circle | USA |
| Dark Age | Germany |
| Dark Angel | USA |
| Dark Funeral | Sweden |
| Darkane | Sweden |
| Dew-Scented | Germany |
| Diamond Head | England |
| Die Apokalyptischen Reiter | Germany |
| Dismember | Sweden |
| Eidolon | Canada |
| Evidence One | Germany |
| Extreme Noise Terror | England |
| Freedom Call | Germany |
| Gamma Ray | Germany |
| Graveworm | Italy |
| Heaven Shall Burn | Germany |
| Human Fortress | Germany |
| In Flames | Sweden |
| Kataklysm | Canada |
| Lordi | Finland |
| Lotto King Karl | Germany |
| Malevolent Creation | USA |
| Masterplan | Norway / Germany |
| Metalium | Germany |
| Nile | USA |
| Obscenity | Germany |
| Onkel Tom | Germany |
| Oratory | Portugal |
| Primal Fear | Germany |
| Psychopunch | Sweden |
| Rage | Germany |
| Raise Hell | Sweden |
| Raunchy | Denmark |
| Rotting Christ | Greece |
| Running Wild | Germany |
| Sentenced | Finland |
| Seventh One | Sweden |
| Sinister | Netherlands |
| Sinner | USA / Germany |
| Slayer | USA |
| Soilwork | Sweden |
| Sonata Arctica | Finland |
| Stratovarius | Finland |
| Subway To Sally | Germany |
| Symphorce | Germany |
| Testament | USA |
| The Almighty Punchdrunk | Canada |
| The Crown | Sweden |
| Thyrfing | Sweden |
| Twisted Sister | USA |
| Twisted Tower Dire | USA |
| V8 Wankers | Germany |
| Vader | Poland |
| Victims Of Madness | Germany |
| Victory | Germany |
ab 23.04.
Ugly Kid Joe
09.06. RheinRiot 2018
16.06. Metaltörn - Köln
ab 05.10. Betontod
ab 20.10. Annihilator
ab 26.10. Powerwolf
ab 23.11. The Night Flight Orchestra
09.06. RheinRiot 2018
16.06. Metaltörn - Köln
ab 05.10. Betontod
ab 20.10. Annihilator
ab 26.10. Powerwolf
ab 23.11. The Night Flight Orchestra
