| Abbreviation | Definition |
|---|---|
| IAMM | International Association of Music Ministries |
| IAMMagazine | Independent Artist Muse Magazine |
| IAMMagazine | Independent Artist & Muse Magazine |
| IAMP | International Association of Music Publishers |
| IAWIA | I Am Who I Am |
| IB | In Band |
| IBA | Individual Band Account |
| IBAM | Irish Books Art Music |
| IBBC | International Big Band Competition |
| IBCC | In Band Code Control |
| IBE | International Breakdance Event |
| IBFD | In band full duplex |
| IBFD | In In band Full duplex |
| IBICF | I Believe I Can Fly |
| IBMA | International Bluegrass Music Association |
| IBMD | International Blues Music Day |
| IBOC | In Band On Channel |
| IBOC | In Band On Cwannel |
| IBPD | In Band Power Difference |
| IC | Improvised Composed |