Wagener is a town in Aiken County, South Carolina, United States. The population was 797 at the 2010 census, making it the largest settlement in the county north of the South Fork Edisto River. It is part of the Augusta, Georgia metropolitan area.

Aiken County is a county in the U.S. state of South Carolina. As of the 2020 census, its population was 168,808. Its county seat and largest community is Aiken. Aiken County is a part of the Augusta-Richmond County, GA-SC Metropolitan Statistical Area. It is mostly in the Sandhills region, with the northern parts reaching in the Piedmont and southern parts reaching into the Coastal Plain.