This is a list of members of the South Australian House of Assembly from 1890 to 1893, as elected at the 1890 colonial election:
1 Yatala MHA 
James Cowan was killed in an accident on 21 July 1890, only two months after his election. 
Richard Butler won the resulting by-election on 13 August.
2 Wooroora MHA 
Hugh Craine Kelly died on 13 January 1891. 
Robert Kelly won the resulting by-election on 25 February..
3 Wallaroo MHA 
David Bews died on 24 February 1891. Independent Labor candidate 
Richard Hooper won the resulting by-election on 23 May.
4 Northern Territory MHA 
Vaiben Louis Solomon resigned on 5 March 1891. He was re-elected in the resulting by-election on 23 and 25 May.
5 East Adelaide MHA 
John Cox Bray resigned on 6 January 1892. Labor candidate 
John McPherson won the resulting by-election on 23 January.
6 Noarlunga MHA 
Charles Dashwood resigned on 24 February 1892. 
William Blacker won the resulting by-election on 26 March.