| Acronym | Definition |
|---|
| HSSL➣Humanities and Social Sciences Library (various locations) |
| HSSL➣High-Speed Serial Link |
| HSSL➣Hopkins Storage Systems Lab (John Hopkins University; Maryland) |
| HSSL➣Hughes Software Systems Ltd. (India) |
| HSSL➣Hindustan Studies and Services, Ltd. (India; est. 1992) |
| HSSL➣Harita Seating Systems Limited (India) |