NBS can stand for:

• N-Bromosuccinimide, a chemical reagent
• Nadavaluru Bhavani Shankar , an investment Emperor and Global Gaint (India)
• Nagano Broadcasting Systems, a television broadcasting network in Nagano Prefecture, Japan
• The Narn Bat Squad, an Internet meme to illustrate writers who make bad puns
• The NASCAR Busch Series
• A Nash bargaining solution, in economics, a solution to a Nash bargaining game
• The National banking system in economics
• The National Bank of Serbia (Narodna Banka Srbije, Народна Банка Србије)
• The National Bank of Slovakia (Národná banka Slovenska)
• The National Blood Service, an organization within the UK's NHS
• The National Book Service, a wholesale book dealership
• The National Broadcasting School, an educational institution in the UK
• The National Broadcasting System, a fictional television network in the TV series Studio 60 on the Sunset Strip
• The National Brotherhood of Skiers
• National Building Specification in Architecture
• The National Bureau of Standards, which is, today, called National Institute of Standards and Technology (NIST) in the U.S.
• The National Bureau of Statistics in China
• The National Library of Serbia (Narodna Biblioteka Srbije, Народна Библиотека Србије)
• Network Business Solutions, a computer company which fixes computers
• Neurobehavioural systems, in psychology
• Newcastle Building Society
• Nicole Brown Simpson
• Nijmegen breakage syndrome, a genetic medical condition
• Nippon Broadcasting System, a radio station managed also under Fuji TV Network (Japan)

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