Calendar & Stationery Publisher / Manufacturer
- IDEA CREATE
- IDEABASE
- IDP出版
- Ikiya
- Ikuta Printing
- IMPACT-JAM
- In Two Corporation
- Indor
- InfoLens
- Infolens
- INROCK
- INROCK
- INSPIRE
- INTELLIGENT SYSTEMS
- Inter Play
- Izanagi
- JALブランド
- Japan Publications Trading
- JB Sports
- Jet System
- JIN+
- Jiyu Kokuminsha
- JM
- JMA・アソシエイツ
- JTB Publishing
- Jurokuhoui
- JVC
- Jリサーチ出版
- J・Sport
- K's Plan
- KADOKAW
- KADOKAWA
- KADOKAWA
- KADOKAWA
- KADOKAWA ASCII MEDIA WORKS
- Kadokawa Magazines
- Kaga Create
- kainzu
- Kamio Japan
- Kanmido
- Kapibara
- Karin Entertainment
- Kato Shokai
- Kawade Shobo Shinsha
- Kawashima Industries
- KD SYSTEM
- kei canpany
- Kenelephant
- Key-th
- KIKUCHI FUSUMA Manufacturing
- KILY & ASSOCIATES
- Kindai Eiga sha
- KING'S SKULL RECORDS
- Kinose Printing Co.,Ltd.
- Kizuna Link
- KLab
- kleid
- Knit Factory
- Kobunsha
- Kodansha
- Koei Techmo Games
- Koei Tecmo Wave
- Kokka
- KONAMI
- Konno Sangyo
- Kosaido Publishing
- Kotobukiya
- Koyudo
- Kthings
- Kurochiku
- KUSUBASHI MON-ORI
- KUTSUWA
- KYO-EI Industrial
- Lambic
- Lamunelab
- Legs
- Lemitas
- License Agent
- Lifestyle Company
- Light Future
- Lilian goods
- LINDA
- Little Wing
- liuxing
- Luface
- LUXENT
- Magazine House
- MAGES.
- Mainichishimbun Shuppan
- MAPPA
- Marushin
- Maruten
- Masameya
- Matching World
- Matsumoto Shoji
- MAW
- Max Limited
- MAXICIMAM
- MdN Corporation
- Media Factory