| Name | Type | Country | Number |
|---|---|---|---|
| MAG Gardenマッグガーデン | Editor | Japan | 10 |
| Mana Books | Editor | France | 6 |
| Mangetsu | Editor | France | 1 |
| Marum | Editor | France | 1 |
| Media Factoryメディアファクトリー | Editor | Japan | 31 |
| Media System | Editor | France | 4 |
| Media Worksメディアワークス | Editor | Japan | 13 |
| Mediationメディエイション | Editor | Japan | 1 |
| Meian | Editor | France | 24 |
| MicroMagazine Shaマイクロマガジン社 | Editor | Japan | 6 |
| Milady | Editor | France | 1 |
| Moon Light | Editor | France | 1 |