| Abbreviation | Definition |
|---|---|
| IBC | Immanuel Baptist Church |
| IBCC | International Board of Christian Counselors |
| IBCS | Institute for Black Catholic Studies |
| IBE | Inayan Brotherhood of Eskrima |
| IBF | Independent Baptist Fellowship |
| IBF | Indian Brethren Fellowship |
| IBF | Indonesian Buddhist Fellowship |
| IBFC | Indonesian Buddhist Fellowship of Canada |
| IBFE | Iglesia Biblica Fe & Esperanza |
| IBFI | Independent Baptist Fellowship International |
| IBFL | Iglesia Bautista Faro de Luz |
| IBFW | I Bear False Witness |
| IBI | Illinois Bible Institute |
| IBIS | Integrity, Beatitudes, Ingenuity, and Stability |
| IBLP | Institute of Buddhist Learning and Practice |
| IBLT | Ignatius Bible, Large Type edition |
| IBLV | Iglesia Bautista La Verdad |
| IBM | Ibrahim Babangida Movement, Nigeria |
| IBMC | Integris Baptist Medical Center |
| IBMC | International Buddhist Meditation Center |