| Acronym | Definition |
|---|
| ATSR | Along-Track Scanning Radiometer |
| ATSR | Argonne Thermal Source Reactor |
| ATSR | Association pour les Techniques et les Sciences de la Radioprotection (French: Association for Science and Technology of Radiation) |
| ATSR | Association Tunisienne de la Santé de la Reproduction (French: Tunisian Association of Reproductive Health; est. 1968; Tunisia) |
| ATSR | Agency for Toxic Substance Registry |
| ATSR | Aircraft Technics Services La Rochelle (aircraft maintenance; La Rochelle, France) |
| ATSR | Association Touristique de la Suisse Romande (French: Romandy Switzerland Tourism Association; Switzerland) |