| IH | Idiopathic Hypercalciuria 
| Others |
| IH | Idiopathic Hypersomnia
| Others |
| IH | Im Hause
| Others |
| IH | Immaculate Heart
| Others |
| IH | Impact Hammer
| Others |
| IH | Implementation Header
| Others |
| IH | In Hat
| Others |
| IH | In House
| Others |
| IH | Incredible Hulk
| Others |
| IH | Indian Handmade
| Others |
| IH | Induction Heating
| Others |
| IH | Induction Hypothesis
| Others |
| IH | Inductive Hypothesis
| Others |
| IH | Infectious hepatitis
| Others |
| IH | Info Header
| Others |
| IH | Info Here
| Others |
| IH | Instant Headache
| Others |
| IH | Institutional Head
| Others |
| IH | Instrument Height
| Others |
| IH | Integrated Healthcare
| Others |
| IH | Intelligent Head
| Others |
| IH | Intense Heep
| Others |
| IH | interacting Hopf
| Others |
| IH | Interim Headset
| Others |
| IH | Internal Halyard
| Others |
| IH | International Harvester
| Others |
| IH | International Havester
| Others |
| IH | International Headquarters
| Others |
| IH | Interstate Highway
| Others |
| IH | Interval History
| Others |
| IH | Inuyashas Hater
| Others |
| IH | Inverted Hybrid
| Others |
| IH | Invisible Hands
| Others |
| IH | Invocation Handle
| Others |
| IH | Iron Heart
| Others |
| IH | Irwin Hall
| Others |
| IH | Isolated Horizon
| Others |
| IH | Israel Harold
| Others |
| IH | The Iron Horse
| Others |