| Hertfordshire International College | Academic & Science |
| Home Improvement Contractor | Business |
| Handbell Industry Council | Business |
| Holderness Investment Club | Business |
| Herts Insurance Consultants | Business |
| Honesty, Integrity, and Credibility | Business |
| Harold Import Company | Business |
| Health Insurance Contract | Business |
| Home Improvement Contractors | Business |
| Highlands Insurance Group, Inc. | Business |
| Household and Industrial Chemical | Chemistry |
| Harmony In Christ | Community |
| Husseini Islamic Center | Community |
| Housing Inventory Count | Community |
| Human Investigations Committee | Community |
| Head Injury Criterion | Community |
| Home Improvement Certification | Community |
| Harrogate International Centre | Community |
| Health Information Custodian | Computing |
| High Information Content | Computing |
| Host Interface Computer | Computing |
| Hybrid Integrated Circuit | Electronics |
| Herding Instinct Certified | General |
| Hawaiian Island Creations | General |
| Hydrologic Information Center | General |
| Hawaii International Child | General |
| High Integrity Container | General |
| Hydrophobic Interaction Chromatography | General |
| Harold Import Co | General |
| Hawaii Information Consortium | General |
| Household Incentive Compatibility | General |
| Hydrophobic Interaction Column | General |
| Highly Impressive acComplishment | General |
| History In Coins | General |
| Hidden Improvisers Consort | General |
| High Inebriation Concentration | General |
| Haematologic Intensive Care | General |
| Hidden Internal Compression | General |
| Histology and Imaging Core | General |
| Hot Idle Compensator | General |
| Hyundai Intelligence Concept | General |
| Hybrid Integrated Circuit Igniter | General |
| Hangover Information Center | General |
| Hawaiian Island Camaros | General |
| Hawaiian Island Creationz | General |
| Happiness In Common | General |
| Head Impact Criteria | General |
| High Income Country | General |
| H Is Cracking | General |
| Hidden Integrated Compression | General |
| Human Immunology Core | General |
| Human Interaction Component | General |
| Hand Indicating Controller | General |
| Hydrologist In Charge | General |
| Health Insurance Commission | Governmental |
| Hickam Air Force | Governmental |
| House Intelligence Committee | Governmental |
| Habitat International Coalition | Governmental |
| Health Insurance Claim | Medical |
| Health Improvement Centre | Medical |
| Health Informatics Community | Medical |
| Hepatic Iron Concentration | Medical |
| Hospitals Insurance Company | Medical |
| Health Innovation Challenge | Medical |
| Head Injury Criteria | Medical |
| Hypermethylated In Cancer | Medical |
| Hickup | Messaging |
| Humanitarian Information Center | Military and Defence |
| Hydrogen Induced Cracking | Physics Related |
| High Income Countries | Regional |
| Hickam Air Force Base, Hawaii | Space Science |