The 1975 South Australian state election was held on 12 July 1975.
Since the previous election, the Liberal and Country League had formally become the South Australian branch of the Liberal Party. However, the breakaway Liberal Movement also contested the election with several sitting members. Seats won by the LCL in 1973 are listed below as Liberal-held, except for Goyder which had been won by the LM at a by-election.