| Abbreviation | Definition |
|---|---|
| MAP | Mobile Application Part |
| MAPDU | Management Application Protocol Data Unit |
| MAPP | Mobile Access Personal Presence |
| MATAC | Metro Atlanta Telecommuting Advisory Council |
| MATAC | Metropolitan Atlanta Telecommuting Advisory Council |
| MATAC | Mid Atlantic Telecommuting Advisory Council |
| MATI | Mescalero Apache Telecom Inc |
| MB | Measured Business |
| MBA | Message Body Authenticator |
| MBAC | Measurement Based Admission Control |
| MBCM | Multiple Block-Coded Modulation |
| MBS | Meter Backflow Services |
| MBT | Michigan Bell Telephone |
| MBWA | Mobile Broadband Wireless Access |
| MC | Main Cross-connect |
| MC | Make Call |
| MC/MIC | Mode Common/Mode Indicate Common |
| MCA | Missed Calls Alert |
| MCC | Mobile Competence Centre |
| MCC | Mobile Country Code |