Chatmonchy (チャットモンチー, chattomonchī?) is an all-woman rock band which consists of Eriko Hashimoto (Guitar, Vocals) and Akiko Fukuoka (Bass, Chorus), who are from Tokushima Prefecture on the island of Shikoku, Japan. Since 2005, they have been signed to Sony Music Japan's Ki/oon Records record label.

Ex Members:

Yumi Nakamura (Bass) (2000 - 2002)

Erina Ishida (Drum) (2000 - 2002)

Sonekayo (Drum) (2002-2003)

Kumiko Takahashi (Drums, Chorus) (2004 - 2011, she was a supportive member in 2003)