Sidney
- County:
- Sharp County
- County Seat:
- No
- Area (mi²):
- 2.086
- State:
- Arkansas
Sidney is a town located in Sharp County, Arkansas. Sidney has a 2026 population of 203. Sidney is currently declining at a rate of 0% annually and its population has increased by 4.64% since the most recent census, which recorded a population of 194 in 2020.