IBA
- American Association of Petroleum Geologists
- Behavioral targeting
- Clarence Iba
- Erol Iba
- Gene Iba
- Henry Iba
- IBA Tiki
- Iba, Osun State
- Iba, Zambales
- Important Bird Area
- Incinerator bottom ash
- Independent Broadcasting Authority
- Indian Banks' Association
- Indole-3-butyric acid
- InfiniBand
- Inquilinos Boricuas en Acción
- Institute of Business Administration (disambiguation)
- Interceptor body armor
- Intercollegiate Biomathematics Alliance
- International Association for Bear Research and Management
- International Bank of Asia
- International Bank of Azerbaijan
- International Bar Association
- International Bartenders Association
- International Basketball Association
- International Bodyboarding Association
- International Boxing Association
- International Bryozoology Association
- International Buddhist Academy
- Internationale Bauausstellung
- Ion Beam Applications
- Ion beam analysis
- Iron Butt Association
- Isobutanol
- Israel Broadcasting Authority
- Itsuki Iba
- List of IBA official cocktails
- Moe Iba
- ÍB Akureyri