| 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) |