| Acronym | Definition |
|---|
| PNSB➣Purple Non-Sulfur Bacteria |
| PNSB➣Puncak Niaga Sdn. Bhd. (water industry; Malaysia) |
| PNSB➣Permodalan Negeri Selangor Berhad (Malaysia) |
| PNSB➣Palau National Scholarship Board |
| PNSB➣Police Narcotics Suppression Bureau (Thailand) |
| PNSB➣Progetto Nazionale Simon Bolivar (Italian: National Simon Bolivar Project) |