BSSI
| Acronym | Definition |
|---|---|
| BSSI | British Superultramodern Scientific Institution (online organization) |
| BSSI | Baker Support Services, Inc. (Altus, OK) |
| BSSI | Benefit Systems and Services, Inc. (Westmont, IL) |
| BSSI | Beck Scale for Suicidal Ideation (mental health) |
| BSSI | Berry-Shino Securities, Inc. |
| BSSI | Baba Satya Sai Industries (fraudulent company; India) |