| Acronym | Definition |
|---|
| ECCC | Emerald City Comic Con (Seattle, WA) |
| ECCC | Extraordinary Chambers in the Courts of Cambodia |
| ECCC | Environment and Climate Change Canada |
| ECCC | Electronic Colloquium on Computational Complexity |
| ECCC | European Champion Clubs Cup (athletic competition) |
| ECCC | East Central Community College |
| ECCC | El Camino Community College (Torrance, CA) |
| ECCC | El Camino Country Club (California) |
| ECCC | East Contra Costa County (California) |
| ECCC | Eastern Collegiate Cycling Conference |
| ECCC | Electronic Commerce Council of Canada |
| ECCC | European Communities Chemistry Council |
| ECCC | Executive Committee Conference Call (various organizations) |
| ECCC | Erie County Community Corrections (Erie, NY) |
| ECCC | Evangelical Christian Church in Canada (est. 1804) |
| ECCC | Employee Charitable Contribution Campaign |
| ECCC | Edinburgh City Centre Company (UK) |
| ECCC | École de Cuisine du Chef Corvez (French: Cooking School Chef of Corvez) |
| ECCC | Essex County Cricket Club |
| ECCC | Engineer Captains Career Course |
| ECCC | Episcopal Camps and Conference Centers Inc |
| ECCC | Energy Conversion and Conservation Center (Louisiana) |
| ECCC | Eau Claire Community Council |
| ECCC | European Club Crew Championships |
| ECCC | Étoile Cassis Carnoux la Ciotat (French football club) |
| ECCC | Emeritus Certified Cost Consultant |
| ECCC | Engineering Control Center Console |
| ECCC | European Command Coordination Committee |