FSSB
| Acronym | Definition |
|---|---|
| FSSB | Freestyle Street Basketball (gaming) |
| FSSB | Fondation Sylvie et Simon Blais (French: Sylvie and Simon Blais Foundation; Canada) |
| FSSB | Frontiers in Systems and Synthetic Biology (conference) |
| FSSB | Financial Solvency Standards Board (California) |
| FSSB | Female Scientists in Structural Biology (Switzerland) |
| FSSB | Foreign Studies Service Bureau (India; education) |
| FSSB | Fima Securities Sdn. Bhd. (Malaysia) |