| Abbreviation | Definition |
|---|---|
| IBO | International Baccalaureate Organization |
| IBPC | Institute for Biological Problems of Cryolithozone |
| IBRC | Ingestive Behavior Research Center (Purdue University) |
| IBRC | International Branch Research Committee |
| IBS | Institute of Broadcast Sound |
| IBS | International Business Students |
| IBSS | Introductory Basic Sciences Stream |
| IBSU | International Black Sea University |
| IBU | International Balkan University |
| IBU | International Bujutsu University |
| IBU | International Burch University |
| IC | Instructor Consent |
| IC | Internship Complete |
| ICA | International Coach Academy |
| ICA | Inter-university Conference of Agriculture |
| ICAA | International Centre for Albanian Archaeology |
| ICAM | Institute for Conflict Analysis and Management |
| ICAN | Individual Curriculum And Assessment Notebook |
| ICAN | Institute Career Assistance Network |
| I-CARE | IBM Collaborative Academia Research Exchange |