| Acronym | Definition |
|---|
| COSB➣California Oaks State Bank |
| COSB➣Council of Schools for the Blind (US and Canada) |
| COSB➣Chamber Orchestra of the South Bay (California) |
| COSB➣Class of Service Buffer (data communications) |
| COSB➣City of Oxford Silver Band (est. 1887; UK) |
| COSB➣Central Operations and Systems Branch (Australia) |