| Acronym | Definition |
|---|
| SDHC | Secure Digital High Capacity (flash memory) |
| SDHC | Secure Digital High Capacity |
| SDHC | Succinate Dehydrogenase Complex, Subunit C |
| SDHC | School District of Hillsborough County (Florida) |
| SDHC | San Diego Housing Commission |
| SDHC | Secure Digital Host Controller |
| SDHC | South Dakota Humanities Council |
| SDHC | South Downs Harness Club (UK) |
| SDHC | South Durham Health Care (UK) |
| SDHC | South Dakota Homeless Consortium |
| SDHC | San Diego Hat Co |
| SDHC | Senior Day Health Center |
| SDHC | Standard Definition High Capacity |
| SDHC | Southern Delta Hypnosis Clinic (Dumas, AR) |
| SDHC | South Dakota Honors Choir |
| SDHC | Secondary Diaphragm Housing Cover |
| SDHC | San Diego Housing Coalition (California) |
| SDHC | San Diego Host Committee |