| Acronym | Definition |
|---|
| ECSG | Electronic Commerce Steering Group (Asia-Pacific Economic Cooperation) |
| ECSG | European Company Sport Games (recreational sports tournament) |
| ECSG | European Cooperative Study Group (medical study) |
| ECSG | Executive Committee Study Group (IEEE) |
| ECSG | Executive Consultant Select Group (Alliance for Children and Families) |
| ECSG | European Community Study Group (diagnostic medicine) |
| ECSG | École Centrale Supérieur de Génie Informatique et Industriel (French: Central High School of Computer and Industrial Engineering; Madagascar) |
| ECSG | Electronic Commerce Study Group |