| Enrollment Management Admission System | Academic & Science |
| European Microbeam Analysis Society | Academic & Science |
| Engineering Multi Agent Systems | Academic & Science |
| Engineering Materials Arresting System | Academic & Science |
| Eco Management Audit Scheme | Business |
| Eco Management and Auditing Scheme | Business |
| Expressway Monitoring and Advisory System | Business |
| Electronic Mail Alerting System | Business |
| Electronic Managed Automated Solution | Business |
| Eco Managment And Audit Scheme | Business |
| Em Management At The Speed | Business |
| Expressway Monitoring Advisory System | Business |
| Eco Management and Audit Scheme | Business |
| Ethiopian Muslims Association of Seattle | Community |
| Education Medical Aid and Service | Community |
| Evangelical Medical Aid Society | Community |
| Edinburgh Multi Access System | Computing |
| E-Mail Alert System | Computing |
| Emergency Materials Arresting System | General |
| Edinburgh Multiple Access System | General |
| Engine Management and Analysis System | General |
| Environmental Management System | General |
| Eco Mobility Advanced Solution | General |
| Electro Hydraulic Multi Axle Steering | General |
| Electronically Modulated Air Suspension | General |
| Engineered Material Arresting System | General |
| Edinburgh Modular Arm System | General |
| Ethnic Minority Achievement Service | General |
| Engineered Materials Arresting System | General |
| East Midlands Ambulance Service | General |
| Engineered materials arrestor system | General |
| Eco Mobility Advance Solution | General |
| Environmental Management Association of Singapore | Governmental |
| Exercise Message Analysis System | Governmental |
| Environmental Management and Audit Scheme | Governmental |
| Environmental Management and Auditing System | Governmental |
| Employment Medical Advisory Service | Medical |
| European Male Ageing Study | Regional |
| European Menopause and Andropause Society | Regional |