| Acronym | Definition |
|---|
| BNSA | Banque Numérique du Savoir d'Aquitaine (French: Digital Knowledge Bank of Aquitaine; Aquitaine, France) |
| BNSA | Brief Negative Symptom Assessment (Texas Medication Algorithm Project) |
| BNSA | Belaruskaya Natsianalnaya Skautskaya Asatsiyatsia (Belarusian scouting organization) |
| BNSA | Bulgarian Nuclear Safety Authority (Sofia, Bulgaria) |
| BNSA | Belarusian National Scout Association |
