| Abbreviation | Definition |
|---|---|
| IBM | International Business Machines |
| IBMC | International Business Machines Corp |
| IBMC | Iowa Bankers Mortgage Corporation |
| IBMI | International Brands Marketing, Inc. |
| IBML | International Base Metals Ltd |
| IBO | Internet Business Owner |
| IBOA | International Bankers Operations Association |
| IBOC | International Brazilian Opera Company |
| IBP | Institute for Brain Potential |
| IBPC | International Business Promotion Center (South Korea) |
| IBS | Internet Business Systems |
| IBSN | Integrated Business Services Network |
| IBT | Indiana Bell Telephone |
| IBTC | India Business and Technology Consortium |
| IBTC | Infofish Bangladesh Trading Corporation |
| IBTM | International Business and Technology Management |
| IBU | Independent Business Unit |
| IC | Insurance Company |
| IC&C | Industrial Command And Control |
| ICA | Indigenous Communications Australia |