| Acronym | Definition |
|---|
| IESL➣Institution of Engineers Sri Lanka (est. 1906) |
| IESL➣Institute of Electronic Structure Laser |
| IESL➣Intelligent Engineering Systems Laboratory (Massachusetts Institute of Technology) |
| IESL➣Information Extraction and Synthesis Laboratory (University of Massachusetts; Amherst, MA) |
| IESL➣Innovative Engineering Systems Ltd. (Aberdeen, Scotland, UK) |
| IESL➣Industrial Electronics and Systems Laboratory (Mitsubishi) |