| Abbreviation | Definition |
|---|---|
| IBCS | Integrated Battlefield Control System |
| IBCT | Infantry Brigade Combat Team |
| IBCT | Interim Brigade Combat Team |
| IBCT | itial Brigade Combat Team |
| IBD | Inhabited Building Distance |
| IBES | Intelligence Budget Estimate Submission |
| IBIN | INTERPOL Ballistic Information Network |
| IBIS | Interactive Battlespace Intell System |
| IBLM | Installed Base Lifecycle Management |
| IBM | Intercontidental Ballistic Missle |
| IBMA | Intelligent Battle Manager Assistant |
| IBMH | International Bibliography of Military History |
| IBOLC | Infantry Basic Officer Leadership Course |
| IBP | Integrated Business Package |
| IBP | Integration By Parts |
| IBR | Integrated Baseline Review |
| IBS | Integrated Battle Space |
| IBS | Integrated Booking System |
| IBS | Integrated Broadcast Service |
| IBS | Integrated Broadcast System |