| Acronym | Definition |
|---|
| HCCH➣Hexachlorocyclohexane |
| HCCH➣Health Care Center for the Homeless (Orlando, FL) |
| HCCH➣Hague Conference / Conférence de la Haye (Hague Conference on Private International Law) |
| HCCH➣Hill Country Christian Homeschoolers (est. 1999; Comal, TX) |
| HCCH➣Highlands County Coalition for the Homeless, Inc. (Sebring, FL) |
| HCCH➣Henry County Court House (Mt. Pleasant, IA) |