General elections were held in South Africa on 17 May 1933 to elect the 150 members of the House of Assembly. The National Party won half the seats in the House, but the coalition with the South African Party continued.

The House of Assembly was the lower house of the Parliament of South Africa from 1910 to 1981, the sole parliamentary chamber between 1981 and 1984, and latterly the white representative house of the Tricameral Parliament from 1984 to 1994, when it was replaced by the current National Assembly. Throughout its history, it was exclusively constituted of white members who were elected to office predominantly by white citizens, though until 1960 and 1970, respectively, some Black Africans and Coloureds in the Cape Province voted under a restricted form of suffrage.