St. Anthony or Saint Anthony is an unincorporated town in southeastern Morton County, North Dakota, United States. It lies a short distance to the west of North Dakota Highway 6, south of the city of Mandan, the county seat of Morton County. It has the ZIP code 58566. In 2018, the population was estimated to be less than 30. The community is near the site of several transmitter towers of Bismarck broadcast television and radio stations.