January
1 – Gideon Brand van Zyl is appointed the 9th Governor-General of the Union of South Africa.
March
12 – The South African Indian Congress (SAIC) delegation is received by the Viceroy, Lord Wavell, in Delhi, India, and submits a petition drafted in consultation with Mohandas Gandhi.
12 – The Indian Representative Act is repealed.
12 – India terminates the trade agreement with South Africa.
15 – The Asiatic Land Tenure Act, the "Ghetto Act", is amended to state that Indians may only live where Indians had resided in non-proclaimed areas.
31 – 6,000 Indians march in Durban in protest to the Asiatic Land Tenure Act.
April
16 – The Eureka Diamond is sold in London for £5,700.
June
11 – India recalls its High Commissioner from the Union of South Africa in protest.
22 – During a prayer meeting in New Delhi, India, Mahatma Gandhi calls for Union of South Africa to stop "hooliganism by the White people
23 – A group White men attack and assault a group of Indian Passive Resisters.
July
8 – Indian protests against government legislation lead to the arrest of hundreds of Indians.
18 January – Gert Johannes Gerwel, academic and politician, is born in the Somerset East district, Eastern Cape.
3 August – Cyprian Mpho Shilakoe, artist and sculpturer, is born in Barberton, Eastern Transvaal.
18 December – Steve Biko, anti-apartheid activist.
William Henry Bell, musician, composer and first director of the South African College of Music.
1 June – Transvaal: Ogies to Vandyksdrif, 21 miles 30 chains (34.4 kilometres).
The South African Railways places the first of fifty Class GEA 4-8-2+2-8-4 Garratt articulated steam locomotives in service.
1946 in South Africa Wikipedia (Text) CC BY-SA