The following are known Action Replay Codes for Jurassic Park III: Park Builder on Nintendo Game Boy Advance (GBA).
These codes were also known as GameShark Codes and in most cases will work on both devices.

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

Master Code – Must Be On
1bde21b4
7a2a0c42
19b3bb89
ece2a366

Max G
cd62aa00
229fe2ff
04450c86
ab2fba7a
eb854879
8169c28d
10c4a7c5
422cbb0d