| IBAC | IBA Branding Advertising Conference 
| Others |
| IBAC | Identity Based Access Control
| Others |
| IBAC | Identity-Based Access Control
| Others |
| IBAC | In Band Adjacent Channel
| Others |
| IBAC | In-Band Adjacent-Channel
| Others |
| IBAC | Independent Broad-based Anti-corruption Commission
| Others |
| IBAC | Insurance Broker Association of Canada
| Others |
| IBAC | Insurance Brokers Association of Canada
| Others |
| IBAC | Integrated Bio Active Clarifier
| Others |
| IBAC | International Balkan Annual Conference
| Others |
| IBAC | International Bankers Association of California
| Others |
| IBAC | International Business Academics Consortium
| Others |
| IBAC | International Business Advisory Council
| Others |
| IBAC | International Business and Career
| Others |
| IBAC | International Business Aviation Council
| Others |