Louis Dufour, Sr. (1873 - April 12, 1944) was a Swiss hockey player who was a member of the of the Swiss National Team at the European Championships in 1910 and 1911. He was responsible for organizing the 1910 EC and was the co-founder of the Swiss Ice Hockey Association and enjoyed a prominent role within the federation. His son, Louis Dufour, Jr., also played hockey at the international level for Switzerland.