| Abbreviation | Definition |
|---|---|
| IBOC | Inspiring Body of Christ |
| IBPC | Island Bay Presbyterian Church |
| IBS | International Bible Society |
| IBS | Investigative Bible Study |
| IBSA | Illinois Baptist State Association |
| IBSG | International Bible Study Group |
| IBTS | International Baptist Theological Seminary |
| ICA | Index of Christian Art |
| ICA | International Christian Assemblies |
| ICA | International Christian Assembly |
| ICAA | International Christian Accrediting Association |
| ICAP | International Christian Alliance on Prostitution |
| ICARE | International Christian Aid Relief Enterprises |
| ICB | International Christian Brotherhood |
| ICBC | International Catholic Bible Commentary |
| ICBR | Islamic Center of Boca Raton |
| ICC | Incarnation Children's Center |
| ICC | Inter Church Conference |
| ICC | Inter-Church Conference |
| ICC | International Church Of Christ |