| Acronym | Definition |
|---|
| ISBA | Illinois State Bar Association |
| ISBA | International Society for Bayesian Analysis |
| ISBA | Iowa State Bar Association |
| ISBA | Incorporated Society of British Advertisers |
| ISBA | Internet Social Security Benefit Application |
| ISBA | International Sea-Bed Authority |
| ISBA | Illinois State Beekeepers Association |
| ISBA | Indiana State Beekeepers Association |
| ISBA | Indonesian Shipbrokers Association |
| ISBA | Information Systems Business Area |
| ISBA | Indiana State Bar Association, Inc. |
| ISBA | Indian Standard Bulb Angle (steel construction) |
| ISBA | International School for Business Acumen (Ahmedabad, Gujarat, India) |