| Name | Type | Country | Number |
|---|---|---|---|
| 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 |