| Abbreviation | Definition |
|---|---|
| HCDE | Harris County Department of Education |
| HCFC | Harris County Flood Control |
| HCFL | Huron County Fastball League |
| HCGH | Howard County General Hospital |
| HCH | Harrison County Hospital |
| HCHA | Harris County Housing Authority |
| HCHC | Homeless Coalition of Hillsborough County |
| HCHG | Henry County |
| HCHL | Harford County Historic Landmarks |
| HCHS | Halifax County High School |
| HCHS | Hamilton County High School |
| HCHS | Haralson County High School |
| HCHS | Harlan County High School |
| HCHS | Hart County High School |
| HCHS | Harvey County Homeless Shelter |
| HCHS | Henderson County High School |
| HCHS | Holmes County High School |
| HCHS | Houston County High School |
| HCHS | Humphreys County High School |
| HCIA | Hudson County Improvement Authority |