| Télesphore St. Arnaud | |
| Birth Date: | 15 December 1870[1] |
| Death Place: | Vimy, Alberta |
| Birth Place: | Champlain, Quebec |
| Office: | Member of the Legislative Assembly of Alberta |
| Constituency: | St. Albert |
| Term Start: | July 18, 1921 |
| Term End: | June 28, 1926 |
| Predecessor: | Lucien Boudreau |
| Successor: | Lucien Boudreau |
| Party: | United Farmers |
| Occupation: | politician |
Télesphore St. Arnaud (15 December 1870 – 15 January 1948) was a provincial politician from Alberta, Canada. He served as a member of the Legislative Assembly of Alberta from 1921 to 1926 sitting with the United Farmers caucus in government.
St. Arnaud ran for a seat to the Legislature in the 1921 Alberta general election. He defeated Liberal incumbent Lucien Boudreau in a straight fight to pick up the St. Albert electoral district for the United Farmers.[2] He did not run for re-election and retired at dissolution of the assembly in 1926.