This is a list of members of the South Australian Legislative Council from 1857 to February 1861. This was the first Legislative Council to be elected under the new Constitution, which provided for a house consisting of eighteen members to be elected from the whole State acting as one Electoral District; that six members, selected by lot, should be replaced at General Elections after four years, another six to be replaced four years later and thenceforth each member should have a term of twelve years.