Aiken can refer to:
- Aiken, Illinois
- Aiken County, South Carolina
- near Savannah River Plant
- Aiken, South Carolina, Aiken County's county seat
- The University of South Carolina Aiken
- Aiken, Texas
- Aiken, Bell County, Texas
- Aiken, Floyd County, Texas
- Aiken, Shelby County, Texas
- Inman, Kansas, once known as Aiken