NBL

• Namibia Breweries Limited
• National Bank Limited, the first private sector bank fully owned by Bangladeshi entrepreneurs
• Nepal Bank Limited
• Noble Energy, a former oil and natural gas exploration and production company with the NYSE ticker symbol NBL, now part of Chevron Corporation
• North British Locomotive Company

• n-Butyllithium, an organic compound
• Neutral Buoyancy Laboratory, an astronaut training facility at NASA's Johnson Space Center
• New Brunswick Laboratory

• National Badminton League (United Kingdom)
• National Basketball League (disambiguation)
• National Bicycle League (United States)
• National Bowling League (United States) – defunct
• North Bay League, now part of the North Coast Section (NCS) of the California Interscholastic Federation (CIF)

• North Berwick Law, a volcanic plug in East Lothian, Scotland, United Kingdom
• Northumberland, county in England, Chapman code
• Nuestra Belleza Latina, a reality television beauty pageant

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