| IESS | International Engineering Students Society (University of Melbourne) | 国际工程学生协会（墨尔本大学） |
| IESS | Initial Execution Sequence Set | 初始执行序列集 |
| IESS | Integrated Electronic Systems Sector (Motorola) | 综合电子系统部门（摩托罗拉） |
| IESS | Inelastic Electron Scattering Spectroscopy | 非弹性电子散射光谱 |
| IESS | INTELSAT Earth Station Standards | INTELSAT地球站标准 |
| IESS | Integrated Electronic Security System | 综合电子安全系统 |
| IESS | International Encyclopedia of the Social Sciences | 国际社会科学百科全书 |
| IESS | Instituto Ecuatoriano de Seguridad Social (Ecuador) | 厄瓜多尔社会研究所（厄瓜多尔） |
| IESS | Integrated Electromagnetic System Simulator | 综合电磁系统模拟器 |
| IESS | Imagery Exploitation Support System | 图像开发支持系统 |
| IESS | Integrated Electronic Systems Sector | 综合电子系统部门 |
| IESS | Image Exploitation Support System | 图像开发支持系统 |
| IESS | Intergroup Ewing's Sarcoma Study (USA) | 成员尤文氏肉瘤研究(美国) |
| IESS | Internet Entrepreneurs Support Service | 互联网企业家支持服务 |