GAK
| Acronym | Definition |
|---|---|
| GAK | Gesellschaft für Aktuelle Kunst (German) |
| GAK | Gemeenschappelijk Administratiekantoor |
| GAK | Guitars, Amps, Keyboards (music equipment) |
| GAK | Göteborgs Astronomiska Klubb (Swedish: Gothenburg Astronomics Club) |
| GAK | Grazer Athletikklub (German: Graz, Austria soccer club) |
| GAK | Global Alliance Klan (online internet gaming) |
| GAK | Governmental Accessed Key(s) |