| ECCC | East Central Community College 
| Others |
| ECCC | East Coast Camaro Club
| Others |
| ECCC | East Coast Car Club
| Others |
| ECCC | East Coast Corvette Club
| Others |
| ECCC | Eastern Carolina Corvette Club
| Others |
| ECCC | Eastern Collegiate Cycling Conference
| Others |
| ECCC | Electric City Corvette Club
| Others |
| ECCC | Electronic Colloquium on Computational Complexity
| Others |
| ECCC | Electronic Commerce Council of Canada
| Others |
| ECCC | Emerald City Comic Con
| Others |
| ECCC | Emerald Coast Corvette Club
| Others |
| ECCC | Emirates Classic Car Club
| Others |
| ECCC | Environment and Climate Change Canada
| Others |
| ECCC | Essex County Cricket Club
| Others |
| ECCC | Eucharistic Catholic Church in Canada
| Others |
| ECCC | European Champion Clubs Cup
| Others |
| ECCC | European Club Cup of Champions
| Others |
| ECCC | European Communities Chemistry Council
| Others |
| ECCC | European Computer Competence Certificate
| Others |
| ECCC | European Creep Collaborative Committee
| Others |
| ECCC | Evangelical Christian Church in Canada
| Others |
| ECCC | Export Commodity Control Code
| Others |
| ECCC | Extraordinary Chambers in the Courts of Cambodia
| Others |