Donaldson is a town in Hot Spring County, Arkansas, United States.

[3] Donaldson is located in southern Hot Spring County at 34°14′14″N 92°55′16″W / 34.23722°N 92.92111°W / 34.23722; -92.92111 (34.237169, -92.921177),[4] in the valley of the Ouachita River, which passes 2 miles (3 km) west of the town.

Arkansas Highway 51 has its northern terminus in Donaldson and leads 17 miles (27 km) to Arkadelphia by a more southerly route.

According to the United States Census Bureau, Donaldson has a total area of 0.66 square miles (1.7 km2), all land.

The racial makeup of the town was 97.85% White, 0.61% Native American, and 1.53% from two or more races.