| Name | Type | Country | Number |
|---|---|---|---|
| Hana to Yume COMICS Special花とゆめCOMICSスペシャル | Imprint | Japan | 2 |
| Hana to Yume ONLINE花とゆめONLINE | Website publishing | Japan | 1 |
| Hartaハルタ | Magazine | Japan | 13 |
| head-trick.com | Website publishing | France | 1 |
| Heroes Comicsヒーローズコミックス | Imprint | Japan | 1 |
| Hifumi Shobō一二三書房 | Editor | Japan | 1 |
| Hōbunsha芳文社 | Editor | Japan | 46 |
| Holp Shuppanほるぷ出版 | Editor | Japan | 2 |
| Horror M (Mystery)ホラー M (ミステリー) | Magazine | Japan | 1 |
| Hot-manga | Editor | France | 9 |
| Ichi*Raciいち＊ラキ | Magazine | Japan | 1 |
| Ichijinsha一迅社 | Editor | Japan | 53 |
| Ichijinsha Bunko一迅社文庫 | Imprint | Japan | 1 |
| IDW Publishing | Editor | United States | 7 |
| Indés-Sociables | Editor | France | 2 |
| ISAN Manga | Editor | France | 1 |
| Issekinicho | Editor | France | 1 |
| it COMICS | Imprint | Japan | 2 |
| ITANイタン | Magazine | Japan | 1 |
| J-pop | Editor | Italy | 1 |
| J'ai lu | Editor | France | 1 |
| Jets comicsジェッツ・コミックス | Imprint | Japan | 5 |
| Jiveジャイブ | Editor | Japan | 3 |
| Jump Comicジャンプ・コミックス | Imprint | Japan | 29 |
| Jump J Booksジャンプ ジェイ ブックス | Imprint | Japan | 1 |
| Jump SQ.19ジャンプSQ.19 | Magazine | Japan | 4 |
| Jump Squareジャンプスクエア | Magazine | Japan | 14 |
| Jump Xジャンプ改 | Magazine | Japan | 5 |
| KA esuma bunkoKAエスマ文庫 | Imprint | Japan | 2 |
| KADOKAWA | Editor | Japan | 109 |
| Kadokawa Bunko角川文庫 | Imprint | Japan | 3 |
| Kadokawa Comics角川コミックス | Imprint | Japan | 4 |
| Kadokawa Comics A角川コミックス・エース | Imprint | Japan | 55 |
| Kadokawa Comics Dragon Jr.角川コミックス ドラゴンJr. | Imprint | Japan | 1 |
| KADOKAWA MysteryKADOKAWAミステリ | Magazine | Japan | 1 |
| Kadokawa Shoten角川書店 | Editor | Japan | 54 |
| Kadokawa Sneaker Bunko角川スニーカー文庫 | Imprint | Japan | 4 |
| Kadokawa Tsubasa Bunko角川つばさ文庫 | Imprint | Japan | 3 |
| Kakao Corporation카카오 | Editor | France | 0 |
| Kami | Editor | France | 6 |
| Kana | Editor | France | 73 |
| Kawadesho Bōshisha河出書房新社 | Editor | Japan | 1 |
| Kazé | Editor | France | 62 |
| Kazé Manga | Imprint | France | 45 |
| Kbooks | Editor | France | 1 |
| KC DeluxeKCデラックス | Imprint | Japan | 13 |
| KC Deluxe NakatoshiKCデラックス なかよし | Imprint | Japan | 3 |
| KC peaceKCピース | Imprint | Japan | 1 |
| KCDX AfternoonKCデラックス アフタヌーン | Imprint | Japan | 2 |
| KCx ITAN | Imprint | Japan | 1 |