| Acronym | Definition |
|---|
| IBA | Important Bird Area(s) |
| IBA | International Bar Association |
| IBA | Israel Broadcasting Authority |
| IBA | Indian Banks' Association |
| IBA | Iron Butt Association (motorcycling) |
| IBA | Institute of Business Appraisers |
| IBA | Ion Beam Applications |
| IBA | Institute of Business Administration (Pakistan) |
| IBA | Ion Beam Analysis |
| IBA | Infiniband Architecture |
| IBA | International Bartenders Association |
| IBA | Indiana Bankers Association (Indianapolis, IN) |
| IBA | Interceptor Body Armor (US Army) |
| IBA | International Bank of Azerbaijan |
| IBA | International Bodyguard Association |
| IBA | Irish Brokers Association |
| IBA | Internationale Bauaustellung (Fair, Berlin, Germany) |
| IBA | Individual Body Armor (US Army) |
| IBA | intermediate bus architecture |
| IBA | International Basketball Association |
| IBA | INcinerator Bottom Ash |
| IBA | Instituto Brasileiro de Atuária (Portugese) |
| IBA | International Bureau of Aviation (UK) |
| IBA | Indigenous Bar Association (Canada) |
| IBA | International Bryozoology Association |
| IBA | Individually Billed Accounts |
| IBA | Industrial Biotechnology Association |
| IBA | Intel Boot Agent (Intel) |
| IBA | Interest Bearing Account (banking) |
| IBA | International Business Accelerator (Santa Teresa, New Mexico) |
| IBA | Independent Bakers Association |
| IBA | Intrust Bank Arena (Wichita, KS) |
| IBA | Independent Broadcast Authority |
| IBA | International Bamboo Association (now World Bamboo Organization) |
| IBA | Idaho Bankers Association |
| IBA | Iowa Bandmasters Association, Inc |
| IBA | Institute for Briquetting and Agglomeration |
| IBA | International Business Advisors |
| IBA | Independent Business Application |
| IBA | Independent Board of Advisors (Georgia) |
| IBA | International Banking Advisor |
| IBA | International Board of Auditors (NATO) |
| IBA | Indole Butric Acid |
| IBA | Inhaled Beta Agonist |
| IBA | Individual Brokerage Account |
| IBA | Indiana Beekeeper's Association |
| IBA | Intelligent Bandwidth Allocation (PCSI) |
| IBA | Internet Business Administration (US Northamerica) |
| IBA | Internet Business Application |
| IBA | Integrated Battlefield Architecture |
| IBA | Interference Blanker Assembly |
| IBA | Inertia Brake Actuator |
| IBA | Institute for Business Advisors (South Africa) |
| IBA | Internal Business Agreement |
| IBA | Indiana Bandmasters Association, Inc (Brownsburg, IN) |
| IBA | Inflatable Boat Association |
| IBA | Inflatable Bouyant Apparatus (US Coast Guard) |
| IBA | Isobutanol (organic compound) |
| IBA | International Business Academy (various locations) |
| IBA | Illinois Bankers Association (est. 1891) |
| IBA | International Business Administration (degree) |