| Acronym | Definition |
|---|
| HHI | Hilton Head Island |
| HHI | Hardware and Home Improvement (various organizations) |
| HHI | Herfindahl-Hirschman Index (measure of market concentration) |
| HHI | Household Income |
| HHI | Holographic Human Interface |
| HHI | Heinrich Hertz Institut (Germany) |
| HHI | Hyundai Heavy Industries Co, Ltd |
| HHI | Healing Hands International |
| HHI | Hrvatski Hidrografski Institut (Hydrographic Institute of the Republic of Croatia) |
| HHI | Habitat for Humanity International |
| HHI | Hereditary Hearing Impairment |
| HHI | Health Help International (charity) |
| HHI | Hoo-Hoo International |
| HHI | Highland Home Industries (Scotland, UK) |