| Rank | Abbreviation | Meaning |
|---|
| ***** | IEH | Ideal Engineering Hours
| |
| **** | IEH | Institute for Environment and Health
| |
| *** | IEH | Institute for Environmental Health
| |
| *** | IEH | Integrys Energy Group Inc (New York Stock Exchange [NYSE])
| |
| *** | IEH | Individual Event History
| |
| *** | IEH | Instituto Euromediterráneo de Hidrotecnia
| |
| *** | IEH | International Extreme-UV Far-UV Hitchhiker
| |
| *** | IEH | Industrial Electric Heating
| |
| *** | IEH | International Environment House
| |
| *** | IEH | Intraco Enterprise Hub
| |
| ** | IEH | Ibrahim El Hibri
| |
| ** | IEH | Indigenous Environmental Health
| |
| ** | IEH | Institute for Ecological Health
| |
| ** | IEH | Islamia Eye Hospital
| |
| * | IEH | Incrementally Extensible Hypercubes
| |
| * | IEH | Intermediate Effective Hamiltonian
| |
| * | IEH | Initiativ for Etisk Handel
| |
| * | IEH | Intrathoracic extramedullary hematopoiesis
| |
| * | IEH | Integrative Energy Healing
| |
| * | IEH | Incineration and Health
| |
| * | IEH | Imminent Environmental Harm
| |
| * | IEH | Institute for Experienced Heads
| |
| * | IEH | International Environment Health
| |
| * | IEH | Isolated encapsulated hepatocytes
| |
| * | IEH | Island Elderly Housing
| |