Ventersburg is a small town in the Lejweleputswa District Municipality of the Free State province in South Africa, 148 km north of Bloemfontein.

It was established on the farm Kromfontein which was owned by PA Venter who died in 1857.

The Dutch Reform Church was built in Ventersburg in 1891 but it was burnt down in 1900 by the British forces during the Boer War.

On 5 December 2000 it was incorporated into the Matjhabeng Local Municipality along with the city of Welkom and the towns of Allanridge, Hennenman, Odendaalsrus, and Virginia.

Under apartheid, many black residents lived outside Ventersburg in Mmamahabane, an extra-municipal township.