| IER | Institut d'Economie Rurale | Institut d 'Economie Rurale |
| IER | Investment Evaluation Review | 投资评估审查 |
| IER | Indian Economic Review (publication) | 《印度经济评论》（出版物） |
| IER | Initial Evaluation Report | 初始评估报告 |
| IER | Information Exchange Requirements | 信息交换要求 |
| IER | inspiratory/expiratory ratio | 吸气呼气比率 |
| IER | ion-exchange resin | 离子交换树脂 |
| IER | Immediate Eye Relief | 立即眼部缓解 |
| IER | Instituto de EnergÍa Renovable | Instituto de EnergÍa Renovable |
| IER | Information Exchange Request | 信息交换请求 |
| IER | Ion-Exchange Resin (building material) | 离子交换树脂（建筑材料） |
| IER | Initial Engagement Range | 初始啮合范围 |
| IER | Institute for Employment Research | 就业研究所 |
| IER | Independent Expert Review | 独立专家评审 |
| IER | Independent Evaluation Review | 独立评估审查 |
| IER | Integrated Equipment short-circuit Rating | 综合设备短路额定值 |
| IER | Initial Engineering Release | 初始工程发布 |
| IER | Inappropriate Emotional Response | 不恰当的情绪反应 |
| IER | Information Engineering Release | 信息工程发布 |
| IER | Informix Enterprise Replicator | Informix企业复制程序 |
| IER | Institute for Economic Research (Ljubljana, Slovenia) | 经济研究所（斯洛文尼亚卢布尔雅那） |
| IER | Institute for Education and Research (various countries) | 教育研究所（各国） |
| IER | Industrial Equipment Reserve | 工业设备备份 |
| IER | Independent Evaluation Report | 独立鉴定报告 |
| IER | Institute for Economic Rationalization | 经济合理化研究所 |
| IER | Individual Education Record | 个人教育记录 |
| IER | Information Exchange Requirement | 信息交换要求 |
| IER | Initial Environmental Review | 初始环境审查 |
| IER | Institute of Educational Research (Pakistan) | 教育研究所（巴基斯坦） |