| Abbreviation | Definition |
|---|---|
| INSULA | INternational Scientific CoUncil for IsLAnd Development |
| IO | International Organization |
| IOC | Intergovernmental Oceanographic Commission |
| IOC | Inter-Organizational Council |
| IOCC | WHO Inter-Organization Coordinating Committee |
| IOM | International Organisation for Migration |
| IOM | International Organization for Migration |
| IP | Implementing Partner |
| IPC | Integrated food security Phase Classification |
| IPCAT | Implementing Partner Capacity Assessment Tool |
| IPMR | Integrated Planning, Management and Reporting |
| IPOA | International Plan Of Action |
| IPPI | International Public Policy Institute |
| IPS | International Port Security |
| IPSAS | International Public Services Accounting Standards |
| IPSC | Implementing Partner Selection Committee |
| IPSC | Implementing Partners Selection Committee |
| IPUM | Intra-Regional Participatory Urban Management |
| IR | International Rescue |
| IRNA | Initial Rapid Needs Assessment |