The Matterhorn Gotthard Bahn is a narrow gauge railway line and a railway company in Switzerland. The track width is 1,000 mm. 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.

The Furka Oberalp Railway is a narrow gauge mountain railway in Switzerland with a gauge of 1,000 mm. It runs in the Graubünden, Uri and Canton of Valais. Since January 1, 2003, it is part of the Matterhorn Gotthard Bahn when it merged with the BVZ Zermatt-Bahn.