The South African Native National Congress changes its name to African National Congress.
The Electricity Supply Commission (Escom) is established in terms of the Electricity Act No. 42 of 1922.
30 April – Francis Tucker, South African Rally Driver. (d. 2008)
6 August – Moira Lister, Anglo-South African film, stage and television actress. (d. 2007)
20 November – Nadine Gordimer, writer and political activist. (d. 2014)
12 April – Transvaal – Dunswart to Apex deviation, 4 miles 16 chains (6.8 kilometres).
21 May – Natal – Queen's Bridge to Duff's Road deviation, 5 miles 55 chains (9.2 kilometres).
8 July – Natal – Canelands, Umdloti to Maidstone deviation, 6 miles 74 chains (11.1 kilometres).
6 August – Cape – Kamfersdam to Winter's Rush, 34 miles 29 chains (55.3 kilometres).
9 August – Cape – Belmont to Douglas, 53 miles 22 chains (85.7 kilometres).
30 October – Transvaal – Settlers to Tuinplaas, 13 miles 22 chains (21.4 kilometres).
The New Cape Central Railway places two 2-6-2+2-6-2 Double Prairie type Garratt articulated steam locomotives in service. They will be designated Class GK on the South African Railways (SAR) in 1925.
Major Frank Dutton, SAR Signal Engineer and the Motor Transport Superintendent, conducts trials with a prototype petrol-paraffin powered Dutton road-rail tractor.
Mr. C. Lawson, Superintendent Mechanical of the SAR, experiments with gas-electric motive power and constructs a single experimental producer gas-electric locomotive. The locomotive remains in service for several years but the gas-electric concept will eventually be superseded by diesel-electric traction.
1923 in South Africa Wikipedia