| Abbreviation | Definition |
|---|---|
| HSC | Highes Systems Company |
| HSCIL | Honda Siel Cars India Ltd |
| HSCL | Himadri Speciality Chemical Ltd |
| HSD | Hardware Systems Division |
| HSD | Home Shopping Delivered |
| HSD | Human Services Department |
| HSDC | Haryana Seeds Development Corporation |
| HSDC | Hawaii Strategic Development Corporation |
| HSDT | High School Driver Training |
| HSEA | Health Service Employers Agency |
| HSEL | Harrow School Enterprises Ltd |
| HSG | Hafeez and Sons Ghandghar Sirikot |
| HSG | Hardware Systems Group |
| HSI | Handmade Software, Inc. |
| HSI | Housing and Services Inc |
| HSI | Hudson Smith International |
| HSII | Heidrick Struggles International Inc |
| HSIL | Hindustan Sanitaryware & Industries, LTD. |
| HSK | Hohl Shaft Kegel |
| HSKI | Haitian Street Kids Inc |