| Acronym | Definition |
|---|
| NBSR➣New Brunswick Southern Railway (Canada) |
| NBSR➣Notebook of Srinivasa Ramanujan |
| NBSR➣National Bariatric Surgery Registry (obesity surgery) |
| NBSR➣National Bureau of Standards Reactor |
| NBSR➣National Board for Scientific Research (Libya) |
| NBSR➣Night Back Stance Running (gaming) |