| Rank | Abbreviation | Meaning |
|---|
| ***** | HDSC | Headphone Science
| |
| **** | HDSC | Harwich and Dovercourt Sailing Club
| |
| **** | HDSC | High Density Signal Carrier
| |
| **** | HDSC | hexamethylene-diisocyanate-crosslinked DSC
| |
| *** | HDSC | Hearts, Diamonds, Spades, Clubs
| |
| *** | HDSC | Hitachi Data Systems Corporation
| |
| *** | HDSC | Horse Drawn Street Cars
| |
| *** | HDSC | Huntington's Disease Support Club
| |
| *** | HDSC | Hazardous Material Distribution Support Center
| |
| *** | HDSC | hexamethylenediisocyanate crosslinked dermal sheep collagen
| |
| *** | HDSC | Harley Davidson of Stamford Connecticut
| |
| *** | HDSC | Harrogate District Swimming Club
| |
| ** | HDSC | Hydrometeorological Design Studies Center
| |
| ** | HDSC | historic district study committee
| |
| ** | HDSC | Health and Disability Services Consumers
| |
| ** | HDSC | Historic District Study Commission
| |
| ** | HDSC | Hamiota District Sports Complex
| |
| ** | HDSC | health-deviation self-care behaviors
| |
| * | HDSC | High Definition System Controller
| |
| * | HDSC | High Density Surface Cover
| |
| * | HDSC | Halifax Dunbrack Soccer Club
| |
| * | HDSC | Healthcare Delivery Solutions Congress
| |
| * | HDSC | Health Data Sciences Corporation
| |
| * | HDSC | Health Data Standards Committee
| |
| * | HDSC | Harris Data Services Corp
| |