Izidor "Dori" Kürschner, in Brazil primarily known as Dori Kruschner, (29 June 1885 – 8 December 1941), was a Hungarian football player and coach. As player he was successful with Budapest club MTK, and also played for the Hungary national football team. As coach he succeeded in Germany, winning the national championship with 1. FC Nürnberg. His greatest triumphs were to follow in Switzerland with the Grasshopper Club Zürich, where he won seven titles. Kürschner's appearance on the Brazilian scene of brought a push of innovation football there and helped establish the country as one of the giants of world football.