NBL may refer to:
Business 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
Science n-Butyllithium, an organic compound Neutral Buoyancy Laboratory, an astronaut training facility at NASA's Johnson Space Center New Brunswick Laboratory
Sports 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)
Other uses 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