| Acronym | Definition |
|---|
| HHH | Hash House Harriers |
| HHH | Hubert H. Humphrey |
| HHH | Hot Hot Heat (band) |
| HHH | Hunter Hearst Helmsley (aka Triple H) |
| HHH | Hollywood Hulk Hogan (wrestler) |
| HHH | Herne Hill Harriers (UK) |
| HHH | Hou Hsiao-Hsien (Taiwanese film director) |
| HHH | Hospital Hospitality House (Richmond, VA) |
| HHH | Hospitality House Hotel (College of William & Mary; Williamsburg, VA) |
| HHH | Habitat for Humanity House (various organizations) |
| HHH | Hammond Harwood House (Annapolis, MD) |
| HHH | Heroes Happen Here (comic series) |
| HHH | Helen Hayes Hospital (New York) |
| HHH | Hungry Hungry Hippos (band) |
| HHH | Hill House Hammond (insurance) |
| HHH | Hilton Head, SC, USA - Municipal (Airport Code) |
| HHH | Heads Held High (band) |
| HHH | Happy Hour Hero (song) |
| HHH | Hardy Har Har (laughing) |
| HHH | Hankyu Hanshin Holdings (Japan) |
| HHH | Hungry Hungry Hypocrites (band) |
| HHH | Haters Hate Harder |
| HHH | Heron Habitat Helpers (Seattle, Washington) |
| HHH | Homocitrullinuria, Hyperornithinemia, Hyperammonemia |
| HHH | Hot, Humid, Hazy (weather) |
| HHH | Halifax Habitat for Humanity (Daytona Beach, Florida) |
| HHH | Hank's Helping Hand (Hank's Helping Hand) |
| HHH | Heaven Help Her |
| HHH | Hi, Hello, and How Are You? |
| HHH | Hypoxia, Hyperoxia, Hypercapina (hazards of rebreather diving) |
| HHH | Hand-Held Heat |
| HHH | Hot Hoosier Hits (WHHH radio station) |
| HHH | Hubert Humphrey Hawks (Albuquerque, NM elementary school) |