Sir Joseph Benjamin Robinson, 1st Baronet (3 August 1840 – 30 October 1929) was a South African mining magnate and Randlord. Born in Cradock, Eastern Cape, died Wynberg, Cape Town.
The son of an 1820 settler, he fought on the side of the Orange Free State in the Basuto War, and later became a general trader, wool-buyer and stock-breeder at Dordrecht. On the discovery of diamonds in South Africa in 1867 he hastened to the Vaal River district, where, by purchasing the stones from the natives and afterwards by buying diamond-bearing land, notably at Kimberley, he soon acquired a considerable fortune. His rather forceful business tactics came in for a lot of criticism, earning him the title of "Old Buccaneer", but even so he became a member of the Mining Board and later chairman. He raised and commanded the Kimberley Light Horse. He was Mayor of Kimberley in 1880, and for four years was a representative of Griqualand West in the Cape parliament. On the discovery of gold in the Witwatersrand district in 1886, Alfred Beit financed a partnership with ₤25 000. Robinson purchased the Langlaagte and Randfontein estates, but Beit soon dissolved the partnership because of Robinson's temper and business methods. Robinson chose to keep the western portion of their former joint assets, while Beit took the eastern section. His views as to the westerly trend of the main gold-bearing reef were entirely contrary to the bulk of South African opinion at the time, but events proved him to be correct, and the enormous appreciation in value of his various properties made him one of the richest men in South Africa. He founded the Randfontein Estates Gold Mining Company in 1890, which was the largest individual undertaking on the Reef and one of the largest in the world. As a Rand capitalist he stood aloof from combinations with other gold-mining interests, and took no part in the Johannesburg reform movement, maintaining friendly relations with President Kruger. He claimed that it was as the result of his representations after the Jameson Raid that Kruger appointed the Industrial Commission of 1897, whose recommendations had they been carried out would have remedied some of the Uitlander grievances. On 27 July 1908 he was created a baronet of Hawthornden and Dudley House.