| Abbreviation | Definition |
|---|---|
| MRC | Monthly Recurring Charges |
| MRF | Media Resource Function |
| MRV | Mobile Registration Van |
| MS | Mobile Station |
| MS | Modified Service |
| MSA | Mail Sending Agent |
| MSA | Metropolitan Statistical Area |
| MSAN | Multi-Subscriber Access Node |
| MSAP | Multimedia Services Access Point |
| MSC | Mobile Switching Center |
| MSDL | Mathematical Service Description Language |
| MSID | Mobile Subscriber IDentification Number |
| MSIN | Mobile Subscriber Identification Number |
| MSIS | Mobile Station International Subscriber |
| MSISD | Mobile Station International Subscriber Directory |
| MSISDN | Mobile Station International Subscriber Directory Number |
| MSL | Master Subsidy Lock |
| MSM | Mobile Station Modem |
| MSMA | Multi SIM Multi aActive |
| MSNP | Mobile Number Portability |