Japanese post-rock groups

Japanese instrumental rock band

Japanese screamo band

Japanese math-rock band

Japanese math rock band

Japanese musical group

OOIOO is a Japanese experimental rock band. The four-piece ensemble was founded by Yoshimi P-We (also known as Yoshimio), the drummer and occasional trumpeter for Boredoms. The band's origin lies in a photo shoot that Yoshimi was asked to do for a magazine. She invited a few of her friends to join her, and they created a fake band for the shoot, which they later decided to make real. The band quickly gained attention by being the opening act for Sonic Youth in 1997 on their Japan tour.

Japanese post-rock/shoegaze trio

Nisennenmondai (にせんねんもんだい) are a Tokyo-based instrumental rock trio. They formed in 1999 and took their name from the Japanese translation of the then-current phrase "Y2K bug."

Kannivalism (stylized kannivalism) was a Japanese visual kei rock band originally formed in 2001, signed to Free-Will and distributed by Avex Trax. However, they disbanded that same year when baroque was formed, and subsequently reformed with new bassist Yuchi after baroque disbanded in 2006.