I Was Wrong (lagu 2AM)

I Was Wrong (Hangul: "잘못했어", "Jalmot haesseo") adalah lagu dari boy band balada asal Korea Selatan, 2AM. Mini albumnya dirilis pada tanggal 18 Maret 2010.

Daftar lagu 
 Prologue
 잘못했어 (I Was Wrong)
 어떡하죠 (What Do I Do)
 아니라기에 (Not Because)
 일단 돌아서지만 (Although You've Turned Around Now)
 Lost
 죽어도 못보내 (Can't Let You Go Even If I Die)
 웃어 줄 수 없어서 미안하다 (I’m Sorry I Can’t Laugh For You)
 I Love You (feat. Baek Chan, Joo Hee of 8eight)
 그녀에게 (To Her) (feat. Chansung of 2PM)
 Epilogue (웃는다) (Laugh)

Singel tahun 2010
Album tahun 2010
Singel 2AM
Album 2AM