GAH
| 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 |