| Acronym | Definition |
|---|
| NBSA➣Nurses Board of South Australia |
| NBSA➣Native Bovine Serum Albumin |
| NBSA➣Network Business System Architecture (Sprint) |
| NBSA➣Nickel-Based Superalloy (metallurgy) |
| NBSA➣Netherlands Bank of South Africa (now Nedbank, Ltd.; South Africa) |
| NBSA➣New Brunswick Student Association (Canada) |