Killian
- County:
- Livingston Parish
- County Seat:
- No
- Area (mi²):
- 10.887
- State:
- Louisiana
Killian is a town located in Livingston Parish, Louisiana. Killian has a 2026 population of 1,253. Killian is currently growing at a rate of 1.7% annually and its population has increased by 6.82% since the most recent census, which recorded a population of 1,173 in 2020.