Neurobehavioural systems, in psychology

The National banking system in economics

National Building Specification in Architecture

The National Bank of Serbia (Narodna Banka Srbije, Народна Банка Србије)

The National Bureau of Standards, which is, today, called National Institute of Standards and Technology (NIST) in the U.S.

N-Bromosuccinimide, a chemical reagent

Nicole Brown Simpson

The National Bank of Slovakia (Národná banka Slovenska)

A Nash bargaining solution, in economics, a solution to a Nash bargaining game

Nijmegen breakage syndrome, a genetic medical condition

Nagano Broadcasting Systems, a television broadcasting network in Nagano Prefecture, Japan

Nippon Broadcasting System, a radio station managed also under Fuji TV Network (Japan)

The National Broadcasting School, an educational institution in the UK

The National Library of Serbia (Narodna Biblioteka Srbije, Народна Библиотека Србије)

The National Blood Service, an organisation within the UK's NHS

The NASCAR Busch Series

The National Bureau of Statistics in China