Aetna township
- County:
- Barber County
- County Seat:
- No
- Area (mi²):
- 122.839
- State:
- Kansas
Aetna township is located in Barber County, Kansas. Aetna township has a 2026 population of 9. Aetna township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 9 in 2020.