| Acronym | Definition |
|---|
| ECET | European Council of Enterostomal Therapy |
| ECET | European Centre for Education and Training (est. 1993; Bulgaria) |
| ECET | Electronics and Computer Engineering Technology |
| ECET | Escherichia Coli Entérotoxigène (French: Enterotoxigenic Escherichia Coli) |
| ECET | Enquête sur le Commerce Électronique et la Technologie (French: Survey of Electronic Commerce and Technology; Canada) |
| ECET | Engineering Common Entrance Test (various universities) |
| ECET | Electronic Clinical Expert Technology (software) |
| ECET | Early Childhood Education Technology (various universities) |
| ECET | Every Customer Every Time (retail) |