| Acronym | Definition |
|---|
| ASTER | Association of Software Test Engineering (Japan) |
| ASTER | Advanced Spaceborne Thermal Emission and Reflection Radiometer |
| ASTER | Agenzia per lo Sviluppo Tecnologico dell'Emilia Romagna (Italian: Emilia-Romagna Technological Development Agency; Emilia-Romagna, Italy) |
| ASTER | Assessment Tools for the Evaluation of Risk |
| ASTER | Association Francophone de Stérilisation |
| ASTER | Acceptable Short-Term Exposure Range |
| ASTER | Atmosphere-Surface Turbulence Exchange Research |
| ASTER | Atmospheric Simulation Testing and Research Inc. (Fort Collins, Colorado, USA) |