Argonne is a town in Forest County, Wisconsin, United States. The population was 512 at the 2010 census. The census-designated place of Argonne is located in the town. The unincorporated community of Wisconsin Junction is also located in the town.
According to the United States Census Bureau, the town has a total area of 108.3 square miles (280 km2), of which 108.2 square miles (280 km2) is land and 0.1 square miles (0.26 km2), or 0.06%, is water.
As of the census of 2000, there were 532 people, 194 households, and 135 families residing in the town. The population density was 4.9 people per square mile (1.9/km²). There were 314 housing units at an average density of 2.9 per square mile (1.1/km²). The racial makeup of the town was 95.49% White, 0.19% African American, 3.20% Native American, 0.19% Asian, 0.19% from other races, and 0.75% from two or more races. Hispanic or Latino of any race were 0.94% of the population.