| Acronym | Definition |
|---|
| ASPEN | American Society for Parenteral and Enteral Nutrition |
| ASPEN | Asperger Syndrome Education Network |
| ASPEN | Automated Survey Processing Environment (various locations) |
| ASPEN | Association of Sickle Cell Disease, Priapism, Exchange Transfusion and Neurological Events |
| ASPEN | Advanced System for Process Engineering |
| ASPEN | Automatic System for Performance Evaluation of the Network |
| ASPEN | Automated Speech Exchange Network |
| ASPEN | ASEAN Strategic Plan of Action on the Environment |
| ASPEN | Asheville Sports Production and Education Network |