The following are known Code Breaker Codes for Harry Potter: Quidditch World Cup on Nintendo Game Boy Advance (GBA).

These codes are for the U.S. version of the game.

• Master Code – Must Be On
  0000AA70 000A
  105E0838 0007
• 0 Points To Beat Passing Challenges (Auto Win)
  33003B57 0000
• Infinite Time
  83003B34 3600
• Max Score P1
  33002B5D 0063
• No Score P1
  33002B5D 0000
• Max Score P2
  33002B5E 0063
• No Score P2
  33002B5E 0000
• Infinite Boost
  33003A85 00FF
• Have All Cards
  43004050 FFFF
  00000007 0002
  33004017 0069
• Have All Challenges Beaten
  83004022 FFFF
• Open All Events
  8300402A FFFF
  3300402C 00FF