The following cheat codes are for Tony Hawk's Underground 2 on GameCube.
| NAME CODES |
|---|
| Enter the following codes as your player name in create a skater to play as that character. |
| Skater #1 | Jimbo |
| Skater #2 | O.D |
| Skater #3 | derfunkel |
| Skater #4 | Sorry! |
| PASSWORDS |
|---|
| Enter the following codes at the cheats menu. |
| Always Special | likepaulie |
| Unlock all Levels | urown3d |
| Unlock all Movies | sikflick |
| Unlock all Story Mode Characters | wakpak |
| Unlock C.O.D. Soldier | foxhole |
| Unlock Jesse James | outlaw |
| Unlock Natas Kaupas | unscrewed |
| Unlock Nigel Beaverhausen | britteeth |
| Unlock Pedestrian Group C | love2hate |
| Unlock Pedestrian Group D | fruitboot |
| Unlock Phil Margera | xxlarge |
| Unlock Steve-O | wildman |
| Unlock The Hand | 5knuckles |
| Unlock THPS1 Tony Hawk | retro1 |
The following cheat codes are for Tony Hawk's Underground 2 on PC.
| CHEAT CODES |
|---|
| Enter the following codes at the the Cheat Codes menu in Options. |
| Infinite Rail/Lip balance | straightedge |
| Infinite Special | likepaulie |
| Unlock Natas Kaupas | oldskool |
| Unlock Nigel Beaverhausen | Sellout |
| Unlock Paulie | 4-wheeler |
The following cheat codes are for Tony Hawk's Underground 2 on PlayStation.
| CHEAT CODES |
|---|
| Enter the following codes at the the Cheat Codes menu in Options. |
| Always Special | likepaulie |
| Infinite Rail/Lip balance | straightedge |
| Phil Margera | aprilsman |
| Unlock 'The Hand' | 5fingers |
| Unlock Additional Playable Characters #1 | love2hate |
| Unlock Additional Playable Characters #2 | fruitboot |
| unlock All Levels | d3struct |
| unlock All Movies | boxoffice |
| Unlock C.O.D. Soldier | 2infinity |
| Unlock Natas Kaupas | oldskool |
| Unlock Nigel Beaverhousen | sellout |
| Unlock Shrek | greenguy |
| Unlock THPS1 Tony Hawk | original1 |
| Unlocks All Main Characters | costars! |
The following cheat codes are for Tony Hawk's Underground 2 on Xbox.
| CHEAT CODES |
|---|
| Enter the following codes at the the Cheat Codes menu in Options. |
| All Levels | accesspass |
| All Movies | frontrowseat |
| Always Special | likepaulie |
| Natas Kaupas | oldskool |
| Natas Kaupas | bedizzy |
| Nigel Beaverhausen | skullet |
| Paulie On Skateboard | 4wheeler |
| Perfect Rails | straightedge |
| Phil Margera | aprilsman |
| Unlock Nigel Beaverhousen | sellout |