Smithville
- County:
- Lawrence County
- County Seat:
- No
- Area (mi²):
- 0.666
- State:
- Arkansas
Smithville is a town located in Lawrence County, Arkansas. Smithville has a 2026 population of 83. Smithville is currently declining at a rate of -1.19% annually and its population has decreased by -2.35% since the most recent census, which recorded a population of 85 in 2020.