| Abbreviation | Definition |
|---|---|
| EMS | Electronics Manufacturing Service |
| EMS | Equipment Manufacturing Services |
| EMSC | Emergency Medical Services Corporation |
| EMSI | Emission Monitoring Service Inc |
| EMT | Empresa Municipal de Transports de Tarragona (in Catalan) Municipal transport Company of Tarragona |
| EMT | Extreme Machine Tuners |
| EMTA | Entwicklung und Management Touristischer Angebote |
| EMTC | Echuca Moama Theatre Company |
| EMTI | Emerging Market Technologies Inc |
| EMV | Europay Mastercard And Visa |
| EMW | Eisenacher Motoren Werke |
| EMWC | East Midlands Water Company |
| ENC | Entrepreneur Networking Connection |
| ENDAO | Software company based in Texas (not an acronym) |
| ENDO | Everyday No Days Off (ENDO TACTICAL INC.) |
| ENEA | ENgmans Elektronik Aktiebolag |
| ENEC | Emirates Nuclear Energy Corporation |
| ENI | Elgin National Industries, Inc. |
| ENI | Entertainment Network, Inc. |
| ENL | Electronic Navigation Ltd |