M1
| Acronym | Definition |
|---|---|
| M1 | Money Supply |
| M1 | primary motor cortex (neurobiology) |
| M1 | Meridian 1 (Northern Telecom) |
| M1 | Messia Object 1 (aka Crab Nebula) |
| M1 | Mitchell 1 |
| M1 | First-Year Medical Student |
| M1 | Marathon1 (Video Game) |
| M1 | Mobile One Asia (Singapore) |
| M1 | Merchant Marine Reserve Seagoing (US Navy) |