| Louis Dufour Sr. | |
| Nationality: | Swiss |
| Sport: | Ice hockey |
| Birth Date: | 1873 |
| Death Date: | 12 April |
Louis Dufour Sr. (1873 – 12 April 1944) was a Swiss ice hockey player.[1] He competed in the men's tournament at the 1920 Summer Olympics, along with his son Louis Dufour Jr.[2] Dufour was also a co-founder of the Swiss Ice Hockey Association.[2]