| ECOS | East County One Stop 
| Others |
| ECOS | Eckerd College Organization of Students
| Others |
| ECOS | Education and Career Opportunities System
| Others |
| ECOS | Educator Certification Online System
| Others |
| ECOS | Efficiency Costs Optimization Simulation
| Others |
| ECOS | Electronic Check-Out System
| Others |
| ECOS | Electronic Control System
| Others |
| ECOS | Electronic Customised Option System
| Others |
| ECOS | Embedded Configurable Operating System
| Others |
| ECOS | Embedded Cygnus Operating System
| Others |
| ECOS | Employee Car Ownership Schemes
| Others |
| ECOS | Environment Community Opportunity and Sustainability
| Others |
| ECOS | Environment Community Opportunity Sustainability
| Others |
| ECOS | Environmental Conservation Online System
| Others |
| ECOS | Environmental Coordination Office Of Students
| Others |
| ECOS | Environmental Council of Sacramento
| Others |
| ECOS | Environmental Council of the States
| Others |
| ECOS | Environmentally Concerned Organization of Students
| Others |
| ECOS | European Coalition on Oil in Sudan
| Others |
| ECOS | Events for Communities Of Sustainability
| Others |
| ECOS | Every Community Offering Service
| Others |
| ECOS | Experiment Computer Operating System
| Others |
| ECOS | Experimental Computer Operational Software
| Others |
| ECOS | Extended Communications Operating System
| Others |