| Midwest Enzyme Chemistry Conference | Chemistry |
| Medical Education and Communication Company | Community |
| Maastricht Exhibition Conference Centre | Community |
| Medical Education and Communications Company | Community |
| Memorial Early Childhood Center | Community |
| Minnesota Educational Computing Corporation | Community |
| Meetings Events Conference Coordinators | Community |
| Miyamae English Communication Club | Community |
| The Minnesota Educational Computer Consortium | Community |
| Minnesota Educational Computing Consortium | Community |
| Middle East Council of Churches | Community |
| Michigan Environmental Compliance Conference | Community |
| Mountain Empire Community College | Educational Institute |
| Mobile Expandable Container Configuration | General |
| Maastricht Exhibition and Congress Centre | General |
| Monitoring Evaluation Coordination Contract | General |
| Matrade Exhibition Convention Centre | General |
| Maastricht Exposition and Congress Centre | General |
| Maastricht Exhibition Congress Centre | General |
| Mackay Entertainment Convention Centre | General |
| Microphone Error Cross Correlation | General |
| Midwest Early Corvette Club | General |
| Milwaukee Electric Car Club | General |
| Morris Enthusiasts Car Club | General |
| Methacton Electric Car Club | General |
| Madras Exotic Car Club | General |
| Middle East Commercial Center | General |
| Martinez Early Childhood Center | General |
| Mason Early Childhood Center | General |
| Modular Energy Carrier concept | Governmental |
| Midwest Environmental Compliance Conference | Governmental |
| Military Education Coordination Council | Governmental |
| Minimal Extracorporeal Circulation | Medical |
| Making Every Contact Count | Medical |
| Middle East Cancer Consortium | Medical |
| Memory Expansion Card Connector | Networking |
