This is a list of members of the New South Wales Legislative Council from 1988 to 1991:
1 Marie Bignold was expelled from the Call to Australia Party in November 1988. She served out the remainder of her term as an independent.
2 ALP MLC 
Jack Garland resigned on 9 April 1990. 
Jeff Shaw was appointed to the resulting casual vacancy on 1 May.
3 ALP MLC 
Deirdre Grusovin resigned on 23 June 1990 in order to contest a by-election for the Legislative Assembly seat of Heffron. Former MLC 
Dorothy Isaksen was appointed to the resulting casual vacancy on 4 July.