| 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) |