| Acronym | Definition |
|---|
| EARTh | Earth Association for Regression Therapy (Netherlands) |
| EARTh | Escuela de Agricultura de la Region Tropical Humeda (Costa Rica) |
| EARTh | Energy Aware Radio and Network Technologies (est. 2010; research project; EU) |
| EARTh | Education and Research: Testing Hypotheses |
| EARTh | Earth Awareness - Rediscovering Traditions and Heritage |
| EARTh | Environmental Assessment and Risk Tools Homepage |
| EARTh | Environmental and Remedial Treatment for Hydrocarbons (San Fernando, Trinidad WI) |
| EARTh | Environmental Applied Research Technology House Corp. (Canada) |