HHC or hhc can refer to:
- Happy hardcore dance music
- Headquarters and Headquarters Company, a company-sized unit of the United States Army
- New York City Health and Hospitals Corporation
- Hereditary hemochromatosis
hhc.exe, the name of the compiler for Microsoft Compiled HTML Help- HHC Hardenberg, a Dutch football club
- Hip Hop Congress
- Hispanic Health Council
- Holistic health counsellor
- Hungarian Helsinki Committee
