| △Nombre▼≋ | ▲País▼⊗ | ▲Provincia▼ | ▲#▼ |
|---|---|---|---|
| Metal Mammoth, Inc. | EE.UU. | Easthampton, Massachusetts. | 1 |
| Middle Pillar Presents | EE.UU. | New York City | 2 |
| Millennium Publications | EE.UU. | Narragansett, Rhode Island | 7 |
Miskatonic Repository  | EE.UU. | ¿¿¿??? | 29 |
| Miskatonic River Press | EE.UU. | Florida | 6 |
| Miskatonic University Podcast | EE.UU. | Internet | 3 |
| Mock Man Press | EE.UU. | San Francisco | 2 |
| Modest Games | EE.UU. | Los Angeles, CA. | 1 |
| Monolith Graphics | EE.UU. | Ohio | 1 |
| Mr. B Games | EE.UU. | ¿? | 1 |
| Mythos Books LLC | EE.UU. | Missouri | 2 |
| New Comet Games | EE.UU. | ¿? | 3 |
| New Falcon Publications | EE.UU. | Las Vegas, Nevada | 1 |
| Night Shade Books | EE.UU. | San Francisco | 3 |
| Pagan Publishing | EE.UU. | Washington | 25 |
| Parliament House Press | EE.UU. | Florida | 1 |
| Pegasus Books | EE.UU. | Nueva York | 4 |
| Penguin Group | EE.UU. | New York | 1 |
| Permuted Press | EE.UU. | Tennessee | 3 |
| Petersen Games | EE.UU. | Texas | 9 |
| Pinnacle Entertainment Group | EE.UU. | Tennessee | 1 |
| Playroom Entertainment | EE.UU. | ¿? | 1 |
| Prime Books | EE.UU. | Maryland | 3 |
| Prolific Games | EE.UU. | Minnesota | 1 |
| Prometheus Press | EE.UU. | California | 1 |