| Acronym | Definition |
|---|
| ECSB➣East Cambridge Savings Bank (Cambridge, MA) |
| ECSB➣European Council for Small Business |
| ECSB➣Étude Charpente et Structure Bois (French: Carpentry and Wood Structure Study) |
| ECSB➣Edmonton Catholic School Board (Edmonton, Alberta, Canada) |
| ECSB➣Electronic Commerce Standards Board (Computing Technology Industry Association) |
| ECSB➣Entente Charnècles St-Blaise (French table tennis club) |
| ECSB➣Early Childhood Services Bureau (Montana) |