| Ma, Yiming | These Memories Do Not Belong to Us | Novel (40,000 words and up) | Science Fiction |
| Magaziner, Lauren | The Incorruptibles by Magaziner, Lauren | Middle Grade | Alt History, Fantasy, Near Future, Science Fiction |
| Mancera, David; Louzon, Monica | "Through the Crimson Forest" | Indie, Short Story (up to 7,500 words), Work in Translation | Environmental / Cli-Fi, Fantasy, Science Fiction, Speculative |
| Manners, Arthur H. | “Looking Back” by Manners, Arthur H. | Poetry | Science Fiction |
| Manners, Arthur H. | Looking Back | Poetry | Science Fiction |
| Marcia Chen
Joe Benitez | Lady Mechanika: The Devil in the Lake | Graphic Novel | Fantasy, Science Fiction, Steampunk |
| Margariti, Avra | "Wives at the End of the World" | Flash (up to 1,500 words), Indie | Cozy, Environmental / Cli-Fi, Near Future, Science Fiction |
| Marin, H. | Shelter in Place | Flash (up to 1,500 words) | Environmental / Cli-Fi, Science Fiction, Speculative |
| Martin, Gareth Damian | Citizen Sleeper 2: Starward Vector | Video Game | Fantasy, Science Fiction, Space Opera |
| Martin, Nuell | Slaves to the Stars | Novel (40,000 words and up) | Fantasy, Near Future, Science Fiction |
| Maruyama, Kate | “Faith” by Maruyama, Kate | Novelette (between 7,500 and 17,500 words) | Science Fiction |
| Mead, Allee | Isaac by Mead, Allee | Indie, Novella (between 17,500 and 40,000 words) | Cozy, Near Future, Science Fiction |
| Mead, Allee | Isaac | Novella (between 17,500 and 40,000 words) | Cozy, Romantasy, Science Fiction |
| Mehta, Tashan | Mad Sisters of Esi by Mehta, Tashan | Novel (40,000 words and up) | Fantasy, Science Fiction, Weird |
| Mendoza, Josh | Shadow of the Eternal Watcher | Indie, Novel (40,000 words and up) | Near Future, Science Fiction, Space Opera |
| Mendoza, Josh | Shadow of the Eternal Watcher | Novel (40,000 words and up) | Science Fiction, Space Opera |
| Mills, S. C. | “His Goose Is Cooked” by Mills, S. C. | Short Story (up to 7,500 words) | Humorous, Near Future, Science Fiction |
| Misir, Mon | The Growing Moon | Short Story Collection | Hopepunk, Science Fiction |
| Mistina, Deborah | Imber | Novel (40,000 words and up) | Science Fiction |
| Mitchell, Miguel | Stop Clomgomg to the Meat | Poetry | Science Fiction |
