The following are known Game Genie Codes for Mega Man V on Nintendo Game Boy.

• 01B-75F-915
  Infinite lives
• 01B-EAF-E66
  Start with 1 lives
• 05B-EAF-E66
  Start with 5 lives
• 09B-EAF-E66
  Start with 9 lives
• 004-1D9-3B7
  Infinite energy
• 269-44F-808
  Start with about 25% energy
• 4B9-44F-808
  Start with about 50% energy
• 709-44F-808
  Start with about 75% energy
• 212-269-E61
  Invincibility