| Acronym | Definition |
|---|
| M2M | Machine-to-Machine (communication, mainly mobile) |
| M2M | Made to Measure |
| M2M | Mouth to Mouth (also seen as MTM) |
| M2M | Mobile to Mobile (cellular phone) |
| M2M | Month to Month |
| M2M | Machine to Machine |
| M2M | Many to Many |
| M2M | Mobile to Mobile |
| M2M | Modified Delay Modulation Mark |
| M2M | Member-to-Member |
| M2M | Minutes to Midnight (Linkin Park album) |
| M2M | Methane to Markets (now Global Methane Initiative) |
| M2M | Men to Men |
| M2M | Manufacturer to Manufacturer (e-commerce exchange) |
| M2M | Metal to Metal (semiconductor antifuse structure) |
| M2M | Manager-to-Manager |
| M2M | Morning to Midnight (New York grocery store) |
| M2M | Marketplace to Marketplace |
| M2M | May 2nd Movement (anti-vietnam student movement) |
| M2M | Mark2Market (energy trading term) |
| M2M | Military to Military (Program) |
| M2M | Marit to Marion (musical group) |
| M2M | Mailbox-To-Mailbox (Sprint) |
| M2M | Marketing to Men |