ATRU
| Acronym | Definition |
|---|---|
| ATRU | Auditorium Theatre of Roosevelt University (Chicago, IL) |
| ATRU | Application Technology Research Unit (USDA) |
| ATRU | Asociación de Travestis del Uruguay (Spanish) |
| ATRU | Airsoft Tactical Recon Unit (Luzon, Philippines) |
| ATRU | Auto-Transformer-Rectifier Unit |
| ATRU | African Radio and Television Union |