| Acronym | Definition |
|---|
| IER | Interrupt Enable Register (computer architecture) |
| IER | INPO (Institute of Nuclear Power Operations) Event Report |
| IER | Interrupt Enable Register |
| IER | Ingress Edge Router |
| IER | International Entrepreneur Rule (US DHS) |
| IER | Institute for Energy Research (Washington, DC) |
| IER | International Employment Relations (various schools) |
| IER | Institut d'Economie Rurale |
| IER | Institute for Employment Research |
| IER | Institute for Economic Research (Ljubljana, Slovenia) |
| IER | Ion-Exchange Resin (building material) |
| IER | Information Exchange Requirement |
| IER | Intermediate Eye Relief (rifle scope) |
| IER | Initial Environmental Review |
| IER | Institute of Educational Research (Pakistan) |
| IER | Independent Evaluation Report |
| IER | Intervention Event Rate (clinical trials) |
| IER | Indian Economic Review (publication) |
| IER | Independent Expert Review |
| IER | Institute for Education and Research (various countries) |
| IER | Information Engineering Release |
| IER | Information Exchange Request |
| IER | Independent Evaluation Review |
| IER | Information Item Error Rate (machine translation evaluation) |
| IER | Initial Evaluation Report |
| IER | Industrial Equipment Reserve |
| IER | Initial Engagement Range |
| IER | Initial Engineering Release |
| IER | Informix Enterprise Replicator |
| IER | Individual Education Record |
| IER | Investment Evaluation Review |
| IER | Info-Engineering Resources (Internet presence provider) |
| IER | Inappropriate Emotional Response |
| IER | Integrated Equipment short-circuit Rating |
| IER | Internal Exclusion Room (various schools; UK) |
| IER | Inspectorate of Engineering Resources (UK) |
| IER | Institute for Economic Rationalization |
| IER | Inwendige Eventrecorder (cardiology device) |
| IER | In Expected Range |