| Abbreviation | Definition |
|---|---|
| IABC | International Association of Biblical Counselors |
| IABCA | International All Breed Canine Association |
| IABD | International Association of Blacks in Dance |
| IABE | Idaho Association of Bilingual Education |
| IABE | International Association of Black Entomologists |
| IABI | International Association of Bible Institutes |
| IABM | International Association of Broadcast manufacturers |
| IABM | International Association of Broadcast Meteorology |
| IABM | International Association of Broadcasting Manufacturers |
| IABO | Iowa Association of Building Officials |
| IABR | Indiana Association of Beverage Retailers |
| IABR | International Association for Breath Research |
| IABR | International Association of Breath Research |
| IABS | International Association of Buddhist Studies |
| IABS | International Association of Byron Societies |
| IABS | Irish Association of Barbershop Singers |
| IABT | Indiana Association of Biology Teachers |
| IABT | International Association of Black Triathletes |
| IABTI | International Association of Bomb Technicians and Investigators |
| IABTI | International Association of Bomb Technicians Investigators |