| Abbreviation | Definition |
|---|---|
| MTN | Maritime Telecommunications Network |
| MTN | Minneapolis Telecommunications Network |
| MTN | Mobile Telephone Network |
| MTN | Multi Telecommunication Network |
| MTNL | Mahanagar Telecom Nigam Ltd |
| MTNL | Mahanagar Telephone Nigam Limited |
| MTP | Media Termination Point |
| MTP | Message Transfer Part |
| MTP | Mobile Transactional Platform |
| MTS | Manitoba Telecom Services |
| MTS | Manitoba Telephone System |
| MTS | Message Telephone Service |
| MTSO | Mobile Telephone Switching Office |
| MTSS | Minimum Telephone Service Standards |
| MTTE | Ministry of Transport Telecommunications and Energy |
| MTVL | Max Telecom Ventures Ltd |
| MU | Media Unit |
| MU | Message Unit |
| MUB | MultiUse Bearer service |
| MUTO | Multi User Telecommunications Outlets |