1940 Australian Championships – Men's doubles

John Bromwich and Adrian Quist, the two-time defending champions in this event, successfully defended their title by defeating Jack Crawford and Vivian McGrath 6–3, 7–5, 6–1, to win the men's doubles tennis title at the 1940 Australian Championships.^{[1][2][3][4][5][6][7]}

Men's doubles
1940 Australian Championships
Champions	John Bromwich Adrian Quist
Runners-up	Jack Crawford Vivian McGrath
Score	6–3, 7–5, 6–1
Draw	16
Seeds	4

Partaking in the Doubles was the only opportunity for Len Schwartz and Lionel Brodie, the seventh and eighth players in national ranking,^[8] to play in this year's Championships, as their late entries for the Singles were not accepted by the Council of the Lawn Tennis Association of Australia.^[9]

Seeds

1. John Bromwich / Adrian Quist (champions)
2. Jack Crawford / Vivian McGrath (final)
3. Harry Hopman / Len Schwartz (semifinals)
4. Colin Long / Don Turnbull (semifinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

	First round									Quarterfinals									Semifinals									Final
	1	John Bromwich Adrian Quist	6	6	6
		Jack Cummings Evan Henry	4	0	3					1	John Bromwich Adrian Quist	6	6	7
		Frank Bennett Arthur Huxley	6	8	6						Frank Bennett Arthur Huxley	1	2	5
		George Holland Roy Harrison	1	6	4														1	John Bromwich Adrian Quist	6	6	6
	4	Colin Long Don Turnbull	6	7	6														4	Colin Long Don Turnbull	4	3	3
		Bert Felan Harold Whillans	4	5	4					4	Colin Long Don Turnbull	4	6	3	6	6
		Jack Harper Dinny Pails	6	6	6						Jack Harper Dinny Pails	6	2	6	3	2
		George Kendall Henry Lindo	1	4	4																							1	John Bromwich Adrian Quist	6	7	6
	3	Harry Hopman Len Schwartz	3	6	6	6																						2	Jack Crawford Vivian McGrath	3	5	1
		Les Hancock Arthur Liddle	6	4	2	1				3	Harry Hopman Len Schwartz	4	6	6	6
		Jim Gilchrist Bill Sidwell	6	6	6						Jim Gilchrist Bill Sidwell	6	3	4	4
		Max Bonner Max McDermott	4	2	1														3	Harry Hopman Len Schwartz	4	4	6
	2	Jack Crawford Vivian McGrath	6	6	8														2	Jack Crawford Vivian McGrath	6	6	8
		Aub Brogan Roger Woodland	1	0	6					2	Jack Crawford Vivian McGrath	7	6	6
		Dave Thompson Neil Turvey	6	6	6						Dave Thompson Neil Turvey	5	3	2
		Lionel Brodie Max Newcombe	2	3	4