IAHC
| 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 |