| Abbreviation | Definition |
|---|---|
| MINSOC | Management Institute for Social Change |
| MINURSO | Mission des Nations Unies pour l'Organisation d'un Référendum au Sahara Occidental |
| MINURSO | Mission des Nations Unies pour l'Organisation d'un Référendum au Sahara Occidental (United Nations Mission for the organization of a Referendum in Western Sahara) |
| MINUSTAH | MIssion des Nations Unies pour la STAbilisation en Haïti (United Nations Stabilization Mission in Haiti) |
| MIRA | Multi-Cluster Initial Rapid Assessment |
| MIRA | Multi-Sectoral Initial Rapid Assessment |
| MIS | Managerial Information System |
| MJTF | Multi-Jurisdictional Task Force |
| MLB | MINURSO Logistic Base |
| MLF | Multi-Lateral Fund |
| MMOP | Manayunk Metrorail Opportunity Plan |
| MMP | Mobile and migrant populations |
| MMUN | Martingrove Model United Nations |
| MMUN | Midwest Model United Nations |
| MMUN | Montana Model United Nations |
| MMUN | Montessori Model United Nations |
| MMV | Medicines for Malaria Venture |
| MNBD | Ministry of Nation Building and Development |
| MNM | Mobility and Needs Monitoring |
| MOD | Management and Operations Division |