This is a list of members of the New South Wales Legislative Assembly from 1978 to 1981, as elected at the 1978 election.
1 Castlereagh Labor MLA
Jack Renshaw resigned on 29 January 1980. Labor candidate
Jim Curran won the resulting by-election on 23 February.
2 Murray Liberal MLA
Mary Meillon died on 9 June 1980.
Tim Fischer, then the incumbent NCP member for the then-soon-to-be-abolished seat of
Sturt resigned his seat and contested and won the resulting by-election for the NCP on 13 September 1980. This in turn resulted in another by-election in
Sturt, which was won by NCP candidate and former federal MP
John Sullivan on 21 February 1981.
3 Ku-ring-gai Liberal MLA
John Maddison resigned on 4 July 1980. Liberal candidate
Nick Greiner won the resulting by-election on 13 September.
4 Bankstown Labor MLA
Nick Kearns died on 24 July 1980. Labor candidate
Ric Mochalski won the resulting by-election on 13 September.
5 Cessnock Labor MLA
Bob Brown resigned on 29 August 1980 in order to contest the federal seat of Hunter at the 1980 election. Labor candidate
Stan Neilly won the resulting by-election on 21 February 1981.
6 Oxley NCP MLA
Bruce Cowan resigned on 29 August 1980 in order to contest the federal seat of Lyne at the 1980 election. NCP candidate
Peter King won the resulting by-election on 21 February 1981.
7 Maitland Liberal MLA
Milton Morris resigned on 29 August 1980 in order to contest the federal seat of Lyne at the 1980 election. Liberal candidate Peter Toms won the resulting by-election on 21 February 1981.