Massac may refer to several places in the United States: Massac, Kentucky Massac County, Illinois Fort Massac, Massac County, Illinois Massac is the name or part of the name of several communes in France: Massac, Aude, in the Aude département Massac, Charente-Maritime, in the Charente-Maritime département Massac-Séran, in the Tarn département Massiac, Communes of the Cantal département, is the origin of the "Massac" name in Illinois.