Sir David Pieter de Villiers Graaff, 1st Baronet (30 March 1859 – 13 April 1931) was a South African cold storage magnate and politician. Graaff revolutionized the cold storage industry in Africa. He founded the Imperial Cold Storage and Supply Company in 1899, and aggressively ran it until he left to serve in government. Graaff grew the company into one of the largest in Africa. Graaff's wealth soared, at the turn of the century. During World War I he personally part financed the South African war effort and for this he was knighted as well as for services at the Paris Peace Conference 1919.