| EC | Enzyme Commission | - | Computer Acronyms(common) |
| EC | European Community | - | Computer Acronyms(common) |
| EC | Eternal Care - Intensive Care (for A Patient Who Won't Come Out Again) | - | NASA |
| EC | Element Contractor | - | Organizations |
| EC | Engine Control | - | Organizations |
| EC | Engine Cutoff | - | Organizations |
| EC | Essentiality Code | - | Organizations |
| EC | Events Controller | - | Organizations |
| EC | Events Coupler | - | Organizations |
| EC | Experiment Computer | - | Organizations |
| EC | Ecuador (ISO 3166 Digram; FIPS 10-4 Country Code) -Electronic Combat - European Community (see EEC) -Exacoulomb | - | Astronomy |
| EC | European Community | - | Business and Finance |
