This is a list of members of the Australian Senate from 1938 to 1941. Half of its members were elected at the 15 September 1934 election and had terms starting on 1 July 1935 and finishing on 30 June 1941; the other half were elected at the 23 October 1937 election and had terms starting on 1 July 1938 and finishing on 30 June 1944. The process for filling casual vacancies was complex. While senators were elected for a six year term, people appointed to a casual vacancy only held office until the earlier of the next election for the House of Representatives or the Senate.
|Senator||Party||State||End term||Years in Office|
|Mac Abbott||Country||New South Wales||1941||1935–1941|
|Stan Amour||Labor / Non-Comm. Labor [a]||New South Wales||1944||1938–1965|
|John Armstrong||Labor / Non-Comm. Labor [a]||New South Wales||1944||1938–1962|
|Tom Arthur||Labor||New South Wales||1944||1938–1944|
|Bill Ashley||Labor||New South Wales||1941||1938–1962|
|John Barnes [b]||Labor||Victoria||1944||1913–20, 1923–35|
|Robert Clothier||Labor||Western Australia||1944||1938–1950|
|Hon. Herbert Collett||UAP||Western Australia||1941||1933–1947|
|Walter Cooper||Country||Queensland||1941||1928–1932, 1935–1968|
|Thomas Crawford [c]||UAP||Queensland||1941||1917–1947|
|James Cunningham||Labor||Western Australia||1944||1937–1943|
|Dick Dein||UAP||New South Wales||1941||1935–1941|
|Hon. Harry Foll [c]||UAP||Queensland||1941||1917–1947|
|James Fraser||Labor||Western Australia||1944||1938–1959|
|Hon. William Gibson||Independent / Country [d]||Victoria||1941||1935–1947|
|Charles Grant||UAP||Tasmania||1941||1925, 1932–1941|
|Hon. John Hayes||UAP||Tasmania||1941||1923–1947|
|Bertie Johnston||Country||Western Australia||1941||1929–1942|
|Hon. John Leckie||UAP||Victoria||1941||1935–1947|
|Hon. Allan MacDonald||UAP||Western Australia||1941||1935–1947|
|Hon. Philip McBride||UAP||South Australia||1944||1937–1944|
|Hon. Alexander McLachlan||UAP||South Australia||1944||1926–1944|
|James McLachlan||UAP||South Australia||1941||1935–1947|
|Hon. George McLeay||UAP||South Australia||1941||1935–1947, 1950–1955|
|Jim Sheehan [b]||Labor||Victoria||1940 [e]||1938–1940, 1944–1962|
|John Spicer [b]||UAP||Victoria||1944||1940–1944, 1950–1956|
|Oliver Uppill||UAP||South Australia||1941||1935–1944|
|Keith Wilson||UAP||South Australia||1944||1938–1944|
- In April 1940, Amour and Armstrong joined five MHRs in forming the Non-Communist Labor Party, a Lang Labor breakaway led by Jack Beasley. They rejoined the ALP in March 1941.
- Labor Senator John Barnes was elected at the October 1937 election to a term starting on 1 July 1938, but died on 31 January 1938; Labor member Jim Sheehan was appointed to replace him on 12 July, with his term expiring at the September 1940 election, when he was defeated by UAP candidate John Spicer to fill the remainder of the vacancy, expiring on 30 June 1944.
- Father of the Senate
- Gibson was expelled from the Country Party on 23 September 1935 for disloyalty. He continued to support the government as an independent, but was not re-admitted to the party until 21 November 1939.
- Appointed to a casual vacancy and only held office until the earlier of the next election for the House of Representatives or the Senate.
- "The Biographical Dictionary of the Australian Senate 1938". Parliament of Australia. Retrieved 19 March 2017.
- Evans, H. "Filling Casual Vacancies before 1977" (PDF). The Biographical Dictionary of the Australian Senate, Volume 3. Parliament of Australia. Retrieved 24 February 2017.
- "Senator Gibson expelled by the Country Party". The Advocate. 24 September 1935.
- "Senator Gibson rejoins Country Party". The Canberra Times. 22 November 1939.