O2 è il secondo album in studio del gruppo vocale statunitense O-Town, pubblicato nel 2002.
- From the Damage (Ashley Parker Angel; Clif Magness; Steve Kipner) - 3:50
- These Are the Days (David Frank; Steve Kipner; Wayne Hector) - 4:24
- I Only Dance with You (Alex Cantrall; Andrew Ridgeley; Bradley Spalter; David Lindsey; George Michael; Philip White) - 3:26
- Favorite Girl (Carol Haynes) - 4:05
- I Showed Her (Shep Crawford) - 4:12
- Been Around the World (Adam Kagan; Bradley Spalter; Leah Hayworth) - 2:51
- Make Her Say (Ali Theodore; B McDonald; C. Derry; E. Fletcher; Erik Michael Estrada; Master P; Jones; Rich Cronin; Vinni Alfieri) - 3:20
- The Joint (Scharyj, Alex Cantrall; Bradley Spalter; Erik-Michael Estrada; George Scharyj) - 3:15
- Suddenly (Ashley Parker Angel; Billy Chapin; Rich Cronin) - 3:48
- Craving (Ashley Parker Angel; Clif Magness; Pamela Sheyne) - 3:25
- Over Easy (Jamie Houston) - 3:33
- Girl Like That (Ali Theodore; Parker Angel; Dan Miller; Michael Sandlofer; Rich Cronin; Trevor Penick; Vinni Alfieri) - 3:04
- You Can't Lose Me (Diane Warren) - 3:42
- Erik–Michael Estrada
- Dan Miller
- Trevor Penick
- Jacob Underwood
- Ashley Parker Angel