| Acronym | Definition |
|---|
| IAHC➣Internet Ad Hoc Committee |
| IAHC➣International Ad Hoc Committee |
| IAHC➣Irish American Heritage Center (Chicago, IL) |
| IAHC➣International Assets Holding Corporation (financial services) |
| IAHC➣Indiana Arabian Horse Club |
| IAHC➣International Association for Human Caring, Inc. (est. 1987) |
| IAHC➣Interval Algorithm for Homophonic Coding |