ORESAMA
Ovum
out of service
OToGI8
OverTheDogs
OLEDICKFOGGY
橘子贝果
OUTLAW
OBLIVION DUST
Ontama
Ovall
Oranges&Lemons
Ogre You Asshole
日本爱努族摇滚乐团
ORANGE★JAM
OZROSAURUS