ABB Daimler-Benz Transportation (after 1999 DaimlerChrysler Rail Systems), commonly known under its brand Adtranz, was a multi-national rail transport equipment manufacturer with facilities concentrated in Europe and the USA.

The company was created in 1996 in the merger of Daimler-Benz's and ABB's rail equipment manufacturing facilities. In 1999, DaimlerChrysler (now Daimler AG) bought ABB's shares and changed its official name to DaimlerChrysler Rail Systems. Bombardier Transportation acquired the company in 2001, at which time Adtranz was the world's second largest manufacturer of such equipment. The acquisition significantly increased the size of Bombardier's rail industry holdings making Bombardier the largest rail equipment manufacturer in the world.