| Acronym | Definition |
|---|
| HHF | Heinz-Harald Frentzen (racing) |
| HHF | Hardest-Hit Fund (financial assistance program; various locations) |
| HHF | Hyper High Frequency |
| HHF | Historic Hawaii Foundation (Honolulu, HI) |
| HHF | Haitian Health Foundation (Norwich, CT) |
| HHF | Hockey Hall of Fame |
| HHF | High-Heat Flux |
| HHF | Harmony Hall Fukui (concert hall; Fukui, Japan) |
| HHF | Human Highlight Film (sports) |
| HHF | Hyper-High Frequency |
| HHF | HappyHour Films |
| HHF | Hunter Harley Fest (motorcycle rally) |
| HHF | Hard House Federation |
| HHF | HandHeld File Format |
| HHF | Hungry Hungry Felhounds |