Fort St. Michael was a US Army installation in St. Michael, Alaska.
Fort St. Michael may also refer to:
St. Michael Fort, a fort in Ugljan, Croatia Fort Saint Michael, a Hospitaller fort in Senglea, Malta Fortress of São Miguel, a Portuguese fort in Luanda, Angola Fort Sint-Michiel, a Spanish fort in Venlo, the Netherlands Fort San Miguel, a Spanish fort in Vancouver Island, Canada
See also St. Michael's Fortress, a fort near Šibenik, Croatia