Waldron is a city in Scott County, Arkansas, United States. The population was 3,508 at the 2000 census. The city is the county seat of Scott County.
Waldron is located at 34°53′57″N 94°5′29″W / 34.89917°N 94.09139°W / 34.89917; -94.09139 (34.899191, -94.091483).
According to the United States Census Bureau, the city has a total area of 5.0 square miles (13.1 km²), of which, 5.0 square miles (12.9 km²) of it is land and 0.1 square miles (0.2 km²) of it (1.19%) is water.