EMS
- Bad Ems
- Domat/Ems
- E. M. S. Namboodiripad
- EM (disambiguation)
- EM Strasbourg Business School
- EMS (pharmaceuticals)
- EMS Recordings
- EMS Technologies
- Eagleview Middle School
- Earl Marriott Secondary School
- Earthen manure storage
- Eastern Mennonite School
- Eastern Mennonite Seminary
- Eastern Middle School
- Eastern Mountain Sports
- Edinburgh Mathematical Society
- Eitzen Maritime Services
- Electrical muscle stimulation
- Electromagnetic spectrum
- Electromagnetic suspension
- Electronic Music Studios
- Electronic meeting system
- Electronics manufacturing services
- Elektromreža Srbije
- Element management system
- Elwood Middle School
- Emergency Hospital Service
- Emergency Management Services
- Emergency medical services
- Ems (Eder)
- Ems (river)
- Ems (ship)
- Ems Dispatch
- Ems-Chemie
- Energy management software
- Energy management system (electrical grid)
- English Martyrs School and Sixth Form College
- Enhanced Messaging Service
- Enterprise messaging system
- Environmental Media Services
- Environmental Mutagen Society
- Environmental management system
- Eosinophilia–myalgia syndrome
- Equine metabolic syndrome
- Estonian Mathematical Society
- Ethyl methanesulfonate
- European Mathematical Society
- European Meteorological Society
- European Monetary System
- European macroseismic scale
- Event Marketing Solutions
- Execution management system
- Exeter Mathematics School
- Expanded Memory Specification
- Expected mean squares
- Experimental Music Studios
- Express Mail Service
- List of United States Navy hospital ships
- Penn State College of Earth and Mineral Sciences
- River Ems (Chichester Harbour)