Willem Eduard Bok, Jr. (1 January 1880 in Pretoria, South African Republic – 29 October 1956 in Pretoria, Union of South Africa) was a South African lawyer, statesman and judge of Dutch descent.

He was the private secretary of general Louis Botha.

Later in life Bok became a justice of the Supreme Court of the Union of South Africa.

[1] Bok was the eldest son of Willem Eduard Bok (1846–1904), State Secretary of the South African Republic, and Martina Gerardina Johanna Eekhout (1856–1910).

[2] He married in Pretoria 19 December 1907 with Maria Everdina Jacoba Kleyn (1880–1975), with whom he had four children.