The following are known Action Replay Codes for NCAA March Madness 99 on Sony Playstation (PS1).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay, CodeBreaker & GameShark

Away Team Score 0
800167000000

Away Team Score 150
800167000096

Home Team Score 0
800152c40000

Home Team Score 150
800152c40096

Full Momentum Away Team
80122b900000

Full Momentum Home Team
80122b900063

Infinite Creation Points
8013e1480259