| Abbreviation | Definition |
|---|---|
| MSPB | Merit Systems Protection Board |
| MSSICS | Modernized Supplemental Security Income Claims System |
| MTA | Major Trading Area |
| MTA(s) | mail transport agent(s) |
| MTC | More Than Conquerors |
| MTDC | Missoula Technology and Development Center |
| MTFEA | Middle Tennessee Federal Executive Association |
| MTG | Meeting |
| MTG | Minimum Technology Guidance |
| MTO | Microsystems Technology Office |
| MTO | Microsystems Technology Office ( DARPA) |
| MTR | Marginal Tax Revenue |
| MTR | Mid-Term Review |
| MTS | Make To Stock |
| MTTR | Mean Time To Repair |
| MU | meaningful use |
| MUD | Multi User Dungeon |
| MUF | Materials Unaccounted For |
| MUM | Modularization Unitization And Metrication |
| MUPS | Minimum Universal Pension System |