Constitution of South Australia

South Australian Constitution
Overview
Original title	Constitution Act 1934 (SA), s. 1
Jurisdiction	South Australia
Ratified	18 October 1934 (1934-10-18)
Date effective	1 January 1935 (1935-01-01)
System	State Government
Government structure
Branches	Executive Legislative Judicial
Chambers	House of Assembly Legislative Council
Executive	See South Australian Government
Judiciary	See Judiciary of Australia
History
Amendments	78 (77 Parliamentary Amendments and 1 Constitutional Referendum)
Last amended	First Nations Voice Act 2023
Signatories	Governor Winston Dugan
Supersedes	Constitution Act 1856 (SA)

The principles of the current Constitution of South Australia, also known as the South Australian Constitution, which includes the rules and procedures for the government of the State of South Australia, are set out in the Constitution Act 1934. Its long title is "An Act to provide for the Constitution of the State; and for other purposes".

The Act provides for certain sections to be altered by the process of a Bill proposing a change passing all readings, approval by a majority of members in both houses of parliament prior to being assented to by the Governor. It also specifies those sections of the South Australian Constitution that must not only pass a majority vote in both Houses but must then be put to the people of South Australia at a referendum.

The first Act to set out the South Australian Constitution was the Constitution Act 1856, which was the first Constitution in the Australian colonies to provide universal manhood suffrage.