The Matterhorn Gotthard Bahn is a narrow gauge railway line and a railway company (Matterhorn Gotthard Bahn AG, MGB) in Switzerland. The track width is . It was created in 2003 through an amalgamation of Furka Oberalp Bahn (FO) and BVZ Zermatt-Bahn (BVZ). The name comes from the Matterhorn and St. Gotthard Pass.