Johannes de Villiers Graaff, Dr

Johannes de Villiers Graaff (also known as Jan Graaff) is a neoclassical South African welfare economist and former chairman of Nedbank. Graaff is noted for his work on optimal savings rates and contributions to the creation of the social welfare function.

Graaff graduated from the University of Cape Town and then went on to do a PhD in economics at St John's College, Cambridge in 1950.

In 1951 he married Lillian Clare Thomson, daughter of Sir George Paget Thomson, and has six children with her. He is the youngest son of Sir David Graaff, 1st Baronet. His eldest brother Sir De Villiers Graaff, 2nd Baronet.