| Abbreviation | Definition |
|---|---|
| IAEA | International Atomic Energy Agency |
| IAEA | nternational Atomic Energy Agency |
| IAF | Indirect Artillery Shelling |
| IAFS | India Africa Forum Summit |
| IAMB | International Advisory and Monitoring Board |
| IAN | International Affairs Network |
| IANSA | International Action Network on Small Arms |
| IAPSO | Inter-agency Procurement Services Office |
| IARTE | Inter-Agency Real-Time Evaluation |
| IASC | Inter Agency Standing Committee |
| IASC | Inter-Agency Standing Committee |
| IBC | International Broadcasting Cooperation |
| IBC | International Building Code |
| IBWC | International Boundary and Water Commission |
| ICA | Institute of Cultural Affairs |
| ICAO | International Civil Aviation Organization |
| ICARDA | International Center for Agricultural Research in the Dry Areas |
| ICCAT | International Commission for the Conservation of Atlantic Tunas |
| ICCF | International Child Care Fund |
| ICCPR | International Covenant on Civil and Political Rights |