| Rank | Abbreviation | Meaning |
|---|
| ***** | IEES | International Equestrian Education Services
| |
| **** | IEES | Institute of Electrochemistry and Energy Systems
| |
| **** | IEES | Institute for Economic and Environmental Studies
| |
| **** | IEES | Institute for Energy and Environmental Studies
| |
| **** | IEES | Infinity Engine Editor Standard
| |
| **** | IEES | Inland Empire Emerald Society
| |
| **** | IEES | Institute of Electrochemistry and Energy Sources
| |
| **** | IEES | Institute for Earth and Ecosystem Sciences
| |
| *** | IEES | International Education Exchange Services
| |
| *** | IEES | Institute of Economic and Social
| |
| *** | IEES | Instituições Estaduais de Ensino Superior
| |
| *** | IEES | International Enzyme Engineering Symposium
| |
| *** | IEES | Improving the Efficiency of Educational Systems
| |
| *** | IEES | Information Engineering and Electrical Systems
| |
| *** | IEES | Initial Environmental Evaluations
| |
| *** | IEES | International Ecological Engineering Society
| |
| ** | IEES | Internet Explorer Enhanced Security
| |
| ** | IEES | International Educational Exchange Services
| |
| ** | IEES | Imaging Electron Energy Spectrometer
| |