| Acronym | Definition |
|---|
| GAH➣Greatest American Hero (TV show) |
| GAH➣Gas Air Heater |
| GAH➣Groupement des Avions Historiques (French: Historical Aircraft Grouping; Switzerland) |
| GAH➣Golden Alpine Holiday (resort; British Columbia, Canada) |
| GAH➣Georgia Association of Historians |
| GAH➣Grand Alumni Homecoming (various locations) |
| GAH➣Gibson Area Hospital (Gibson City, IL) |
| GAH➣Genetically Altered Human (science fiction) |
| GAH➣Ground Antenna Hardware |