| Acronym | Definition |
|---|
| HAF | Hellenic Air Force (Greece) |
| HAF | Horizontal Air Flow (greenhouse circulation) |
| HAF | Housing Assistance Fund (various locations) |
| HAF | Horde Application Framework |
| HAF | High Availability Framework |
| HAF | Humboldt Area Foundation (Bayside, CA) |
| HAF | Hindu American Foundation (Kensington, MD) |
| HAF | Historic Albany Foundation (Albany, NY) |
| HAF | Headquarters Air Force |
| HAF | Hitachi Accelerated Flash (flash storage) |
| HAF | High Abrasion Furnace (type of carbon black) |
| HAF | High Atlas Foundation (New York, NY) |
| HAF | Huachangfeng Equipment, Inc. (China) |
| HAF | Heartland Arts Fund (now Arts Midwest's Performing Arts Fund; various locations) |
| HAF | Hokkaido Arts Foundation (Hokkaido, Japan) |
| HAF | Husligt Arbejder Forbund (Danish trade union) |
| HAF | High-Order Ambiguity Function |
| HAF | Halogen Acid Furnace |
| HAF | Human Chorionic Gonadotropin Associated Factor |
| HAF | Hologram Auto Focus |
| HAF | Helicopter Assault Force |
| HAF | Hospice Angel Flight |
| HAF | High Altitude Fluorescence |