The following are known Action Replay Codes for Hot Potato! 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
23d1be7a
9415b902
e0edfecb
dd8e0bea

Infinite Lives
c96e133d
3dfba7b6

Infinite Busses
3e6152f9
7574b300

Hit 99 Special Spuds
6509ce83
50445126

All Potatoes Rescued
6509ce83
50445126

Max Score
a43766b2
feb71a52
863c6eec
cd090283
8c5569cc
447c51fb
3ab8ca75
d515eaaa

Press AR Button: Slow
dbba3a89
4cb74b94