Publisher / Manufacturer
- ASK
- ASK Publishing
- AskUsMedia
- Asmik
- Asobi Kenkyujo 365
- Asomanabi
- ASPILITY
- Aspire
- Aspire Records
- ASSY
- ASSY
- Astraia Broad Cast Japan
- Astro System Japan
- Astro System Japan
- Astronauts
- Astronotes Star
- ASUS
- ASWY
- Asyl Design
- AT-X
- ATC
- ATD・NTD
- ATELIER AYA
- Atelier Magi
- aten recordings
- ATERIER G1
- Athena Eizo
- Atlas
- Atmark
- ATO PRESS USA,INC.
- ATOMIC
- Atomic Enterprise
- atomixmedia
- ATORAGON GK
- ATS
- at‐m
- ATパブリケーション
- Audio Technica
- Audiolab
- AUDIOTRAK
- Augusta Records
- Auluxe
- Aunt
- Aurora
- AURU
- AUSONGTIC
- AUTO ART
- Auto Car Japan
- Automaton
- AUTOROZZA
- AV Japan
- AVA‐net
- ave;new
- Avengerz
- AVEX
- avex distribution
- avex io
- Avex Marketing
- Avex Marketing
- Avex Pictures
- avex trax
- AVI
- Aviation 400
- AViiQ
- AVエクスプレ
- Awa Muze
- AWA認証機構
- AWESOME JAPAN
- axel graphic works
- Axel Mark
- Axia
- AXIA
- axion
- Ayers
- AYRE
- Azgrid
- Azip Music
- AZN PRIDE
- AZONE INTERNATIONAL
- Azu Maker
- AZUMA
- Azuma Seisakusho
- A・M・S
- B Comi
- B!インターナショナル・ブックス
- B'full FOTS JAPAN
- B-CLUB
- B-coral
- B-Gram
- B-Gram Co.
- B-Gram RECORDS
- B-SIDE LABEL
- B-Vision
- B.B.C.
- BABYsue
- BABジャパン
- BABジャパン出版局
- Bacchus編集室
- Bad Music Group Music Publishing
- Bad News Records