| Acronym | Definition |
|---|
| IOB➣In Original Box |
| IOB➣Instytucji Otoczenia Biznesu (Polish: Business Environment Institutions) |
| IOB➣Indian Overseas Bank |
| IOB➣Input Output Block |
| IOB➣Institute of Biology |
| IOB➣Input/Output Block (in FPGA) |
| IOB➣Intelligence Oversight Board (part of President's Foreign Intelligence Advisory Board, PFIAB) |
| IOB➣Inspectie Ontwikkelingssamenwerking en Beleidsevaluatie (Dutch: Policy and Operations) |
| IOB➣International Order Book (London Stock Exchange) |
| IOB➣Iranian Oil Bourse |
| IOB➣Input/Output Box |
| IOB➣Insulin on Board |
| IOB➣Institute of Banking (Saudi Arabia) |
| IOB➣Institute of Blogging (Oxfordshire, UK) |
| IOB➣Impact on Business (corporate management) |
| IOB➣Input Output Buffer |
| IOB➣Institute of Building (former name of the Chartered Institute of Building) |
| IOB➣Inter-Organization Board for Information Systems |
| IOB➣Internal Operating Budget |
| IOB➣Iron Ore Beneficiation |
| IOB➣Interoperability Branch |
| IOB➣Installation Operating Budget |
| IOB➣Industrial Order of Battle |
| IOB➣Impact of Build |
| IOB➣Inorganic, Organometallic and Bioinorganic Chemistry |