Leonville
- County:
- St. Landry Parish
- County Seat:
- No
- Area (mi²):
- 2.725
- State:
- Louisiana
Leonville is a town located in St. Landry Parish, Louisiana. Leonville has a 2026 population of 880. Leonville is currently declining at a rate of -0.11% annually but its population has increased by 1.03% since the most recent census, which recorded a population of 871 in 2020.