| NBL | Nanoengineering and Biodesign Lab 
| Others |
| NBL | National Badminton League
| Others |
| NBL | National Bank Limited
| Others |
| NBL | National Barefoot League
| Others |
| NBL | National Basketball League
| Others |
| NBL | National Bicycle League
| Others |
| NBL | National Blackbelt League
| Others |
| NBL | NationalBasketball Baseball League
| Others |
| NBL | Natural Born Liar
| Others |
| NBL | Natural Building Lab
| Others |
| NBL | Naval Biosciences Laboratory
| Others |
| NBL | Ndebele, South
| Others |
| NBL | Neopian Battlefields Legends
| Others |
| NBL | Nepal Bank Limited
| Others |
| NBL | Network Based Learning
| Others |
| NBL | Network Based Localization
| Others |
| NBL | Network Based on Linkage
| Others |
| NBL | Network Benchmarking Lab
| Others |
| NBL | Neutral Buoyancy Lab
| Others |
| NBL | Neutral Buoyancy Laboratory
| Others |
| NBL | New Brunswick Laboratory
| Others |
| NBL | News Broadcasts Live
| Others |
| NBL | No Black Line
| Others |
| NBL | No Block Length
| Others |
| NBL | No Boot Lock
| Others |
| NBL | Nocturnal Boundary Layer
| Others |
| NBL | Noni B Limited
| Others |
| NBL | Norges branntekniske laboratorium
| Others |
| NBL | Northbound Lane
| Others |
| NBL | Northbound Left Turn
| Others |
| NBL | Norwegian Biometrics Laboratory
| Others |
| NBL | Nothing But Lojban
| Others |
| NBL | Nothing But Love
| Others |
| NBL | Nutritionally Balanced Lunchbox
| Others |
| NBL | San Blas, Panama Republic
| Others |