1927 in South Africa

The following lists events that happened during 1927 in South Africa.

Incumbents

Monarch: King George V.
Governor-General and High Commissioner for Southern Africa: The Earl of Athlone.
Prime Minister: James Barry Munnik Hertzog.
Chief Justice: James Rose Innes then William Henry Solomon

;March

4 – An organised diamond rush includes trained athletes who have been hired by major companies to stake claims.

;August

20 – The restored manor house of Groot Constantia is reopened after a fire devastated it in 1925.

;Unknown date

The South African Railways (SAR) begins to convert the couplers of its Cape Gauge rolling stock from the Johnston link-and-pin coupling system, which had been in use since 1873, to AAR knuckle couplers.

13 January – Sydney Brenner, biologist and Nobel Prize laureate, in Germiston, Johannesburg. (d. 2019)
13 May – Duma Nokwe, first black advocate of the Supreme Court of Transvaal and politician, (d. 1978)
20 March – John Joubert, South African–born British composer. (d. 2019)
10 June – Mizream Maseko, artist and Zion Christian Church deacon.
12 June – John Nkadimeng, politician, (d. 2020)
26 June – Ben Turok, activist, economics professor, former ANC member of parliament. (d. 2019)
22 October – Allan Hendrickse, politician, in Uitenhage. (d. 2005)

thumb|[[South African Class HF 2-8-2+2-8-2|Class HF Henschel Fairlie]]

thumb|[[South African Class GF 4-6-2+2-6-4|Class GF Garratt]]

thumb|[[South African Class U 2-6-2+2-6-2|Class U Union Garratt]]

thumb|[[South African Class 18 2-10-2|Class 18]]

thumb|[[South African Class NG G12 2-6-2+2-6-2|Class NG G12 Garratt]]

7 January – Cape – Sunland to Kirkwood, .
10 February – Transvaal – Solarvale to Mount Carmel, .
Ten Class U 2-6-2+2-6-2 Double Prairie type Union Garratt articulated locomotives.