Archibald Peake Liberal Union John Verran United Labor State elections were held in South Australia on 2 April 1910.

The incumbent Liberal and Democratic Union (LDU) government led by Premier of South Australia Archibald Peake was defeated by the United Labor Party (ULP) led by John Verran.

Though a South Australian majority was won, the ULP did not take office until after the new lower house first met.

Following the election, the LDU merged with the two independent conservative parties – the Australasian National League (ANL, formerly National Defence League (NDL)) and the Farmers and Producers Political Union (FPPU) – to become the Liberal Union (LU).

The two-seat multi-member district of Northern Territory was abolished in 1911, reducing the House of Assembly to 40 seats.