| Acronym | Definition |
|---|
| HIFI➣High Fidelity |
| HIFI➣Hypertext Interface for Information |
| HIFI➣Hypertext Interface for Information (Esprit) |
| HIFI➣Hotel Investment Forum India (conference) |
| HIFI➣Hull International Fisheries Institute (est. 1989; University of Hull; Hull, England, UK) |
| HIFI➣Heterodyne Instrument for FIRST (Far-Infra-Red and Sub-Millimeter Telescope) |
| HIFI➣High Fire Performance Wood Products (European manufacturers) |