| Acronym | Definition |
|---|
| HARC | Houston Advanced Research Center |
| HARC | Hawaii Agriculture Research Center |
| HARC | Halon Alternatives Research Corporation |
| HARC | Human Dimensions of the Arctic System |
| HARC | Greater Hartford Association for Retarded Citizens, Inc. |
| HARC | Houston Athletic Rugby Club |
| HARC | Hitachi Asynchronous Remote Copy (Japan) |
| HARC | Highly-Available Resource Co-allocator |
| HARC | Handicapped And Retarded Citizens, Inc. |
| HARC | Highway Amateur Radio Club (South Africa; est. 1996) |
| HARC | Hoodview Amateur Radio Club (Gresham, OR) |
| HARC | Horsham Amateur Radio Club (UK) |
| HARC | Hanford Academic Research Committee |
| HARC | Hercules Amateur Radio Club (KF6MSR) |
| HARC | Hazard Analysis and Risk Control |
| HARC | Hybrid Automatic Rate Control |
| HARC | HUMINT Analysis and Requirements Cell |
| HARC | High Antennas for Radio Communications (US DoD) |
| HARC | Housatonic Amateur Radio Club (Stratford, CT) |
| HARC | Historic Average Room Count (hospitality industry) |