Scania AB is a major Swedish manufacturer headquartered in Södertälje, focusing on commercial vehicles—specifically heavy lorries, trucks and buses. It also manufactures diesel engines for heavy vehicles as well as marine and general industrial applications.

Scania was formed in 1911 through the merger of Södertälje-based Vabis and Malmö-based Maskinfabriks-aktiebolaget Scania. Since 1912, the company has been re-located again to Södertälje after the merger. Today, Scania has production facilities in Sweden, France, the Netherlands, Thailand, China, India, Argentina, Brazil, Poland, Russia and Finland. In addition, there are assembly plants in ten countries in Africa, Asia and Europe. Scania's sales and service organisation and finance companies are worldwide. In 2012, the company employed approximately 42,100 people around the world.

Scania was listed on the NASDAQ OMX Stockholm stock exchange from 1996 to 2014. The company is a subsidiary of Traton, part of the Volkswagen Group.

Scania's logo shows a griffin, from the coat of arms of the province of Scania (Swedish: Skåne).