B
- BABYLON (バビロン)
- BabyKingdom
- Baelscope
- Baggy-Bogy
- Baiser
- Bakudan Koukiatsu
- Ballad
- Bara No Kyuden
- Bararaika
- Baroque
- Be Luna
- Beau
- Beauty Rays
- Believe In Style
- Bellbleach (may no longer be music online)
- Bergerac
- Berry
- Biosphia
- Birushana
- BIS
- Bi;shop
- BlacK cRoss
- Black Gene For The Next Scene
- Black:list
- THE BLACK SWAN
- Blam Honey
- Blast
- BLOCKEN Jr (ブロッケンJr)
- Blood
- Bloody Mary
- Blu-Billion
- Boogieman
- Born
- Branch
- Breakerz
- Braze A Trail
- Bridear
- Brodiaea
- Buck-Tick
- BugLug
- Byakura
- By-Sexual