Vygruppen, branded as Vy, formerly the Norwegian State Railways, is a government-owned railway company which operates most passenger train services and many bus services in Norway. The company is owned by the Norwegian Ministry of Transport. Its sub-brands include Vy Buss coach services, CargoNet freight trains and the Swedish train transport company Tågkompaniet. In 2009, NSB carried 52 million train passengers and 104 million bus passengers. On 24 April 2019, passenger train and bus services were rebranded as Vy.

Vy Buss, formerly branded as Nettbuss, is the largest bus company in Norway, owned by Vy. It was established on 10 February 2000 as the continuation of the bus operations from former NSB Biltrafikk. In addition to bus services in major parts of Norway, it also operates buses in Sweden through subsidiaries.