Argenta is an unincorporated community and census-designated place (CDP) in Beaverhead County, Montana, United States. It is in southwestern Montana, northwest of Dillon, the Beaverhead county seat. Argenta is in the valley of Rattlesnake Creek, a southeast-flowing tributary of the Beaverhead River, part of the Jefferson River watershed leading to the Missouri and finally the Mississippi River.
Argenta was first listed as a CDP prior to the 2020 census. As of the 2020 census, Argenta had a population of 35.