BUMP OF CHICKEN is a Japanese rock band formed in 1994 by 4 members: Motoo Fujiwara (Vocal/Guitar), Hiroaki Masukawa (Guitar), Yoshifumi Naoi (Bass) and Hideo Masu (Drums). They have been friends since preschool. Motoo's lyrics in particular receive acclaim. The band chose the English name to mean "cowards strike back" although they have admitted in interviews that it might not be grammatically correct English.

The band has been influenced especially by The Beatles and they actually started out playing covers of The Beatles songs at school festivals. Although their music can be quite soft, some of their most popular hits are upbeat rock songs.

All their singles contain a funny secret track.
The following groups are performed by BUMP OF CHICKEN members in their secret tracks:
- Good Manners
- Geki-shibu boys
- Jimmy to sono yuujin (Jimmy & his friends)
- JOY