This is a list of members of the New South Wales Legislative Council from 1937 to 1940. At this time the Council was not directly elected, but was chosen by a joint sitting of the New South Wales Parliament.
1 UAP MLC
Sir Charles Rosenthal resigned on 28 October 1937. UAP candidate
Graham Pratten was elected to replace him on 16 December 1937.
2 Country MLC
Sir Arthur Trethowan died on 26 November 1937. Country candidate
Herbert Henley was elected to replace him on 17 December 1937.
3 UAP MLC Herbert Hawkins died on 16 June 1939. UAP candidate Keith Brooks was elected to replace him on 8 August 1939.
4 The seat of independent MLC
Theodore Trautwein was declared vacant on 16 April 1940 following his conviction for making false representation. The vacancy carried over to the next parliament.