| I=E/R | Electrical measured current flow 
| Others |
| IER | Idling Emission Rate
| Others |
| IER | Immediate Early Response
| Others |
| IER | Immediate Eye Relief
| Others |
| IER | Immigrant and Employee Rights
| Others |
| IER | Impact Evaluation Repository
| Others |
| IER | Inclusion Enrollment Record
| Others |
| IER | Independent Evaluation Report
| Others |
| IER | Individual Electoral Registration
| Others |
| IER | Individual Equivalence Ratio
| Others |
| IER | Individual Evaluation Report
| Others |
| IER | Individual Evaluation Rubric
| Others |
| IER | Information Exchange Requirement
| Others |
| IER | Information Exchange Requirements
| Others |
| IER | Ingress Edge Router
| Others |
| IER | Inhomogenous Erdos Renyi
| Others |
| IER | Institute for Employment Research
| Others |
| IER | Institute for Energy Research
| Others |
| IER | Institute for Environmental Research
| Others |
| IER | Institute of Educational Research
| Others |
| IER | Institute of Employment Rights
| Others |
| IER | Institutional Effectiveness and Research
| Others |
| IER | Instructor Effectiveness Rating
| Others |
| IER | Integrated Emergency Response
| Others |
| IER | Integrated Employer Resources
| Others |
| IER | Interdisciplinary Environmental Review
| Others |
| IER | Intermediary Expenditure Report
| Others |
| IER | International Economic Relations
| Others |
| IER | International Economic Review
| Others |
| IER | Interpolation Exclude Region
| Others |
| IER | Intervention Evaluation and Revision
| Others |
| IER | Interviewing Examining and Reasoning
| Others |
| IER | Ion Exchange Resin
| Others |
| IER | Itial Environmental Review
| Others |