Harry Frederick Oppenheimer OMSG (28 October 1908 – 19 August 2000) was a prominent South African businessman, industrialist and philanthropist.

Oppenheimer was often ranked as one of the wealthiest people in the world, and was considered South Africa's foremost industrialist for four decades.

[4] His Brit Milah was performed by Rabbi Harris Isaacs of the Griqualand West Jewish Congregation.

[5] In the same year he returned to Johannesburg, and settled in Brenthurst, the private estate built by his father, Ernest.

[9] Oppenheimer also maintained cordial relations with African statesmen, such as Zambia's Kenneth Kaunda, dining at their official residences.

[7] Through De Beers, he maintained extensive business interests on the continent, with diamond mines operating in Botswana, Namibia, Tanzania and Angola.

The Harry Oppenheimer Agricultural High School in Limburg, Limpopo is named in his honour in recognition of the funds he provided for its establishment.

[13] His daughter, Mary Slack, resides predominantly at Brenthurst, but has houses in Muizenberg[15][16] and London, England, and Wilgerbosdrift stud farm in the Western Cape.

[7] Oppenheimer also required a Cape Town residence during his time as an MP, and in 1948 he purchased a cottage on Buitencingel street in the City Bowl.

"[20] Harry Oppenheimer Diamond Museum in Ramat Gan, Israel, was founded in 1986 to present his life and career.