There are a few places known as Fort St. Joseph:

In Canada:

• Fort St. Joseph (Ontario) , on St. Joseph Island at southern end of the St. Marys River (Michigan-Ontario), now the site of Fort St. Joseph National Historic Site Canada . [1]

In the United States:

• Fort St. Joseph (Port Huron) , on north end of the St. Clair River in what is now Port Huron, Michigan, was later the site of Fort Gratiot
• Fort St. Joseph (Niles), on the St. Joseph River (Lake Michigan) near what is now Niles, Michigan