| Acronym | Definition |
|---|
| NBL | National Basketball League (Australia) |
| NBL | Nuestra Belleza Latina (beauty pagent) |
| NBL | National Bicycle League |
| NBL | No Block Length |
| NBL | Neutral Buoyancy Laboratory |
| NBL | Nocturnal Boundary Layer (meteorology) |
| NBL | National Blackbelt League (martial arts) |
| NBL | New Brunswick Laboratory |
| NBL | Neuroblastoma |
| NBL | Network-Based Learning |
| NBL | National Baseball League |
| NBL | Natural Born Leader |
| NBL | Not Bloody Likely |
| NBL | Nothing But Love |
| NBL | National Bank Limited (Bank; Bangladesh) |
| NBL | National Benefit Life (insurance) |
| NBL | Next Big Language (computer programming) |
| NBL | Negro Baseball League |
| NBL | National Business League |
| NBL | New Brunswick Library (Rutgers University; New Jersey) |
| NBL | Nandan Biomatrix Limited (Hyderabad, India) |
| NBL | Naval Biological Laboratory |
| NBL | Nandan Biomatrix Ltd (Pakistan) |
| NBL | Never Been Laid |
| NBL | Non Battle Loss |
| NBL | Non-Bank Lenders (syndicated loans) |
| NBL | Nippon Business Lease (Nippon, Japan) |
| NBL | Number of Bit Line Failures |
| NBL | Nebraska Bird Lady |
| NBL | North Bay Library (Santa Rosa, CA) |