Jean Etienne de Villiers KC (28 June 1894 – 7 June 1960) known as "Jackie", was a South African judge and Judge President of the Cape Provincial Division of the Supreme Court.
He attended the South African College Schools where in 1910, he was placed in the matriculation honours list.
During the First World War he took part in the South-West Africa and East African campaigns.
[1] De Villiers joined the Cape Bar during August 1921 and he took silk in November 1935.
[2][3] During his early years at the Bar he was a lecturer at the law school at the University of Cape Town and he co-authored with J. C. MacIntosh, the legal textbook, The law of agency in South Africa.