NSB
NSB is the abbreviation for:
- Nationaal-Socialistische Bewegungsing , National Socialist Party in the Netherlands
- National Bureau of Statistics of China , the central point for collecting and processing all statistical data in the People's Republic of China
- National Savings Bank in Sri Lanka
- National Science Board , part of the US National Science Foundation
- NATO Signal Battalion
- New Swiss library , book and media mail order business
- New social movements , political movements
- Neusiedler Seebahn , railway line from Neusiedl am See (Austria) to Fertőszentmiklós (Hungary)
- NSB Niederelbe Schiffahrtsgesellschaft in Buxtehude, German shipping company
- Norges Statsbaner, the Norwegian State Railways
- Norges Statsbaner (1883–1996) , as the railway authority
- Norges Statsbaner (1996–) , Vy (transport company) since 2019 , as a private stock corporation owned by the state
- National Socialist Association of Officials