| IAB | I Am Bored 
| Others |
| IAB | Idle Air By-Pass
| Others |
| IAB | Im A Banana
| Others |
| IAB | Impact Assessment Board
| Others |
| IAB | In A Bit
| Others |
| IAB | In-App Billing
| Others |
| IAB | Indian Affairs Branch
| Others |
| IAB | Indian Autos Blog
| Others |
| IAB | Individual Address Block
| Others |
| IAB | Industrial Accident Board
| Others |
| IAB | Information and Analysis Branch
| Others |
| IAB | Insert Advanced Bench
| Others |
| IAB | Institut Aminuddin Baki
| Others |
| IAB | Institute der Accountants en Belastingadvizeurs (Belgium)
| Others |
| IAB | Institute of Arctic Biology
| Others |
| IAB | Institute of Associated Bookkeepers
| Others |
| IAB | Institute of Brazilian Lawyers
| Others |
| IAB | Instituto dos Advogados Brasileiros
| Others |
| IAB | Intake Air By-Pass
| Others |
| IAB | Interactive Advertising Bureau
| Others |
| IAB | Interest Arrearage Bond
| Others |
| IAB | Internal Affairs Bureau
| Others |
| IAB | International Advertising Bureau
| Others |
| IAB | International Advisory Board
| Others |
| IAB | International Arab Baccalaureate
| Others |
| IAB | International Association of Bioethics
| Others |
| IAB | International Association of Book-keepers
| Others |
| IAB | International Association of Bookkeepers
| Others |
| IAB | International Association of Bryologists
| Others |
| IAB | International Automotive Business
| Others |
| IAB | International Aviation Business
| Others |
| IAB | Internet Activities Board
| Others |
| IAB | Internet Address Book
| Others |
| IAB | Internet Advertising Bureau
| Others |
| IAB | Internet Advisory Board
| Others |
| IAB | Internet Architecture Board
| Others |
| IAB | Internet Archive Bookreaders
| Others |
| IAB | Intranet in A Box
| Others |
| IAB | IUS (Inertial Upper Stage) Assembly Building
| Others |
| IAB | McConnell Air Force Base
| Others |