| Acronym | Definition |
|---|
| TREES | Theological Roundtable on Ecological Ethics and Spirituality |
| TREES | Tropical Ecosystem Environment Observations by Satellite |
| TREES | Tropical Resources and Ecosystems Sustainability (University of the Philippines Los Baños; Laguna, Philippines) |
| TREES | Thailand Rating Energy and Environment System (Thai Green Building Institute) |
| TREES | Transient Radiation Effects On Electronic Systems |
| TREES | Tennessee Real Estate Education System, Inc. (est. 1975; Chattanooga, TN) |
| TREES | Track Relational Extension Server |