| Acronym | Definition |
|---|
| HWG | HTML Writers Guild |
| HWG | Hazardous Waste Generator (various organizations) |
| HWG | Html Working Group |
| HWG | Health Working Group (various organizations) |
| HWG | Hessisches Wassergesetz (Hessian Water Act) |
| HWG | Hamburgisches Wegegesetz (German: Hamburg Roads Act) |
| HWG | Here We Go |
| HWG | Hippies with Guns |
| HWG | Henry Wine Group (Benicia, CA) |
| HWG | Hiding with Girls (band) |
| HWG | Häufig Wechselnder Geschlechtsverkehr (German: promiscuous behavior) |
| HWG | Harmonization Working Group |
| HWG | Heavy Weapons Guy (gaming, Team Fortress Classic) |
| HWG | Hollow Waveguide (Qinetiq, UK) |
| HWG | Heywood Williams Group (UK) |
| HWG | Harris, Wiltshire, Grannis (law firm; Washington, DC) |
| HWG | Home Wireless Gateway (software) |
| HWG | Heater, Water, Gas |
| HWG | Hardware Guy (radio show) |
| HWG | Hansen-Woodyard Gain |
| HWG | HighWay Gamers (gaming community) |