Standerton is a large commercial and agricultural town lying on the banks of the Vaal River in Mpumalanga, South Africa, which specialises in cattle, dairy, maize and poultry farming. The town was established in 1876 and named after Boer leader Commandant A. H. Stander. During the First Boer War a British garrison in the town was besieged by the Boers for three months. General Jan Smuts won this seat during elections and went on to assist in setting up the League of Nations. Standerton is part of the Lekwa Local Municipality.