| Acronym | Definition |
|---|
| ECOM | E-Commerce Online Marketing |
| ECOM | Electronic Commerce |
| ECOM | Emergency Communications |
| ECOM | Emission Control |
| ECOM | Electronics Command (Army) |
| ECOM | Electronic Computer-Originated Mail |
| ECOM | Exterior Communications (System) |
| ECOM | United States Army Electronics Command |
| ECOM | Ethernet Communication Module |
| ECOM | Electronic Commerce Operations Management |
| ECOM | Exchange Carrier Operations Management (Telcordia) |
| ECOM | ESA Cost Modeling Software |
| ECOM | Electronic Control Unit Communications Module |
| ECOM | ECU Communications Module (military aviation) |