Colonel Sir David Harris KCMG (12 July 1852 - 23 September 1942) was a soldier, diamond magnate, and legislator.

He later traveled 950 km from Durban to Kimberley where he began working as a prospector.

In 1897, he joined the Parliament of the Cape of Good Hope on the death of Barney Barnato.

[2] In 1897, he also became a director of De Beers Consolidated Mines, an office he held until 1931.

Harris married his wife, Rosa Gabriel, in 1873, in the first Jewish wedding to take place in Kimberley.