| Acronym | Definition |
|---|
| ATAT➣Any Time All the Time (racing clubs) |
| ATAT➣As the Apple Turns (Macintosh-related web site) |
| ATAT➣All Terrain Armored Transport (Star Wars) |
| ATAT➣Alloy Theoretic Automated Toolkit |
| ATAT➣Arts and Technology at tech (MIT student art group) |
| ATAT➣Apprenticeship and Training Association of Texas |
| ATAT➣Arbeitsgemeinschaft für Total Abgehobene Technologie (Austria) |
| ATAT➣Alternative Technologies and Approaches Team |