The year 2003 was the eleventh year of existence for Magic: The Gathering.
|January, 17-19||Pro Tour Chicago, last win by Kai Budde.
|January, 16||Launch of the second You Make the Card.|
|February, 3||Release of Legions
|February, 4||Rancored_Elf on MTGNews incorrectly reports that Rebecca Guay is fired from WotC due her feminine style.
|March, 21-23||Pro Tour Venice. Won by Osyp Lebedowicz.|
|May, 9-11||Pro Tour Yokohama. Won by Mattias Jorstedt.|
|May, 26||Release of Scourge.
|July, 28||Release of Eighth Edition
|August, 6-10||2003 World Championships in Berlin, Germany, won by Daniel Zink.
|September, 12-14||Pro Tour Boston, won by team The Brockefellers (Brock Parker, Matt Linde and William Jensen).|
|October, 2||Release of Mirrodin, featuring a heavy artifact theme.|
|October, 30 - November, 2||Pro Tour New Orleans, won by Rickard Österberg.
|November||Last issue of the Sideboard magazine.|
|November, 18||Release of Magic: The Gathering – Battlegrounds, a real time strategy video game for Xbox and Windows.|
|Early December||Mark Rosewater becomes head designer.|
|December||Release of the 2003 World Championship Decks.|
|December, 28||Announcement of the closing of the Wizards of the Coast game stores and the affiliated The Game Keeper stores.|
|Player of the Year: Kai Budde|
|Rookie of the Year: Masashi Oiso|
- Legions (January)
- Emperor's Fist (March)
- Scourge (May)
- The Monsters of Magic (August)
- The Moons of Mirrodin (September)
- Champion's Trial (November)
- Lars Grant-West
- Erica Gassalasca-Jape
- Marcelo Vignali
- Richard Sardinha
- Hugh Jamieson
- Jeremy Jarvis
- Jon Foster
- Kevin Dobler
- Martina Pilcerova
- Stephen Tappin