| Acronym | Definition |
|---|
| IEST➣Institute of Environmental Sciences and Technology |
| IEST➣Immunoenzymatic Staining Technique |
| IEST➣International Electronic Sports Tournament (Lenovo; China) |
| IEST➣Integrative Energy and Spiritual Therapy (psychotherapy) |
| IEST➣Inboard Electronics Study Team |
| IEST➣Istituto Europeo per lo Sviluppo Tecnologico (Italian) |