Montana
- Belle Creek
- Cascade County ("waterfall")
- Choteau
- Chouteau County, named after Pierre Chouteau, Jr., an American fur trader of French Canadian origin
- Dupuyer
- Froid ("Cold")
- Gallatin County
- Havre (from Le Havre, France)
- Joliet
- Laurin
- Lozeau
- Portage
- Prairie County
- St. Marie
- St. Xavier
- Sonnette
- Teton County ("Teat")
- Valmy (from Valmy, France)
- Wibaux County
Read more about this topic: List Of U.S. Place Names Of French Origin