| Homing Pigeon Society | Academic & Science |
| High Pressure Solar | Academic & Science |
| Harrison, Perkins, and Scott | Academic & Science |
| Hispano Philanthropic Society | Academic & Science |
| Healthplan Services Corporation | Business |
| Hammond Power Solutions Incorporated Class A | Business |
| Harmony Public Schools | Community |
| Haslett Public Schools | Community |
| Haverhill Public Schools | Community |
| Hickory Public Schools | Community |
| Hotel Performance Support | Community |
| Hartford Public Schools | Community |
| Hollis Primary School | Community |
| Helping People Survive | Community |
| High Profile Students | Community |
| High Performance Stereo | Community |
| Hackensack Public Schools | Community |
| History Philosophy of Science | Community |
| Holland Public Schools | Community |
| Helping People Succeed | Community |
| Habib Public School | Community |
| History and Philosophy of Science | Community |
| Holyoke Public Schools | Community |
| Hennessey Public Schools | Community |
| High Performance System | Computing |
| Hp Services | Computing |
| Horizontal Power Supply | Computing |
| High Performance Switch | Computing |
| High Performance Storage | Computing |
| High Performance Spans | Computing |
| High Power Satellite | Computing |
| Hardware Product Services | Computing |
| Hashes Per Second | Computing |
| Hash Proof System | Computing |
| High Productivity System | Computing |
| HappinessToken | Cryptocurrency |
| Hydro Pneumatic Suspension | General |
| Heavy Paraffin Synthesis | General |
| High Performance Suspension | General |
| Horse Power Shaft | General |
| Highway Pilot System | General |
| Heartland Pulling Series | General |
| Handicapped Parking Space | General |
| Handicap Parking Sign | General |
| Household Pulse Survey | General |
| Hard Processor System | General |
| High Precision System | General |
| High Precision and Speed | General |
| Hybrid Power Sailer | General |
| High Point Shoulder | General |
| Homestead Public Services | General |
| Heavy Photon Search | General |
| Hillsboro Pump Service | General |
| High Precision Syst | General |
| Human and Public Services | General |
| Home Power Solutions | General |
| Historical Person Slash | General |
| High Performance Street | General |
| Honeywell Process Solutions | General |
| Healing Per Second | General |
| High Point of Swale | General |
| Hubbell Power Systems | General |
| High Preformance Step | General |
| Hidden in Plain Sight | General |
| Hamilton Place Strategies | General |
| High Performance Systems | General |
| Hermes Preservation Services | General |
| High Performance Servo | General |
| Plumbing Services | General |
| Hammond Power Solutions | General |
| Head Protection System | General |
| Hydraulic Power Steering | General |
| High Performance Sedan | General |
| High Pressure Support | General |
| Hybrid Power System | General |
| High Pressure Side | General |
| Hydro Pneumatic System | General |
| Hyundai Production System | General |
| Humungous Payments System | General |
| Home Page Service | General |
| Hielo Patagónico Sur | General |
| High Powered Sedan | Governmental |
| Hand Picked Selected | Jobs |
| Hits Per Second | Measurement Unit |
| Health and Public Service | Medical |
| Homelessness Prevention System | Medical |
| Health Promotion Services | Medical |
| Health Per Second | Medical |
| Hantavirus Pulmonary Syndrome | Medical |
| Hermansky Pudlak Syndrome | Medical |
| haemophagocytic syndrome | Medical |
| Health-Promoting Schools | Medical |
| Heart Protection Study | Medical |
| hepatopulmonary syndrome | Medical |
| hexulose-6-phosphate synthase | Medical |
| His-Purkinje system | Medical |
| Human Patient Simulator | Medical |
| hyperprostaglandin E syndrome | Medical |
| Hypertrophic Pyloric Stenosis | Medical |
| Health Payment Systems | Medical |
| Hi Power Soldiers | Military and Defence |
| Health Physics Society | Physics Related |
| High Pressure Sodium | Physics Related |
| Hot Passionate Soup | Softwares |
| Hydraulic Power System | Space Science |
