| Abbreviation | Definition |
|---|---|
| IHS | In His Service |
| IHS | In His Steps |
| IHS | Isis Horus Seb |
| IICC | Institute for International Christian Communication |
| IICD | International Institute of Christian Discipleship |
| IICM | International Institute of Christian Ministries |
| IICRA | International Islamic Centre for Reconciliation and Arbitration |
| IICS | Ipeka Integrated Christian School |
| IIDH | Islamic International Dental Hospital |
| IIJHN | Second John |
| IIRC | Islamic Institute of Religion and Culture |
| IISC | Islamic Information Society of Calgary |
| IJA | Islamic Jaffaria Association |
| IJCR | Institute for Jewish Catholic Relations |
| IJHN | First John |
| IJIK | International Journal of Islamic Khazanah |
| IJMA | Inter Jewish Muslim Alliance |
| IJMN | In Jesus' Mighty Name |
| IJND | International Jesuit Network for Development |
| IK | Immaculatus Keep |