People

• Clarence Iba (1909-1997), American basketball coach
• Erol Iba (born 1979), Indonesian footballer
• Henry Iba (1904-1993), American basketball coach
• Moe Iba (born 1939), American basketball coach
• Itsuki Iba, a fictional character in the Japanese light novel series Rental Magica

Places

• Iba, Osun State, town in Nigeria
• Iba, Zambales, municipality in Zambales, Philippines

• Roman Catholic Diocese of Iba

Organizations

• Independent Broadcasting Authority, a defunct regulatory body in the United Kingdom
• Indian Banks' Association
• Institute of Business Administration (disambiguation)
• Intercollegiate Biomathematics Alliance
• International Bank of Asia, a defunct bank in Hong Kong, now Fubon Bank
• International Bank of Azerbaijan
• International Bar Association
• International Bartenders Association, which set out IBA Official Cocktail regulation
• International Basketball Association
• International Bear Association aka The International Association for Bear Research and Management
• International Bodyboarding Association
• International Boxing Association, sport organization that sanctions amateur boxing
• International Bryozoology Association
• International Buddhist Academy
• Ion Beam Applications, solutions for the diagnosis and treatment of cancer
• Iron Butt Association
• Israel Broadcasting Authority, the former Israeli public broadcaster
• ÍB Akureyri, former Icelandic sports club, abbreviated ÍBA

Other

• AAPG Imperial Barrel Award Program
• iBooks Author, iPad ebook authoring software (usually iBA), IBA can also refer to its file format
• Important Bird Area
• Incinerator bottom ash
• Indole-3-butyric acid - auxin, a plant rooting hormone
• InfiniBand Architecture
• Interceptor Body Armor
• Interest-based advertising
• Internationale Bauausstellung
• Ion beam analysis, a set of analytical techniques involving the use of ion beams
• Isobutyl alcohol, an organic solvent