May
19 – White women are enfranchised.
Unknown date
The Private Act of the University of Pretoria is passed, changing the name of the Transvaal University College to the University of Pretoria.
30 January – Magnus André de Merindol Malan, Minister of Defence in the 1980s, is born in Pretoria.
23 February – Fanie du Plessis, South African athlete. (d. 2001)
25 November – David Goldblatt, photographer, is born in Randfontein.
14 April – Cape – Fort Knokke to Woltemade no. 1, 4 miles 5 chains (6.5 kilometres).
24 April – Free State – Parys to Vredefort, 10 miles 75 chains (17.6 kilometres).
14 May – Free State – Petrus Steyn to Lindley, 27 miles 67 chains (44.8 kilometres).
19 September – Natal – Empangeni to Nkwalini, 39 miles 67 chains (64.1 kilometres).
1 November – Cape – Koopmansfontein to Postmasburg, 65 miles 74 chains (106.1 kilometres).
6 November – South West Africa – Witvlei to Gobabis, 31 miles 44 chains (50.8 kilometres).
10 December – Cape – New England to Barkly East, 18 miles 6 chains (29.1 kilometres).
The South African Railways places fourteen Class 19B 4-8-2 Mountain type locomotives in service.
1930 in South Africa Wikipedia (Text) CC BY-SA