Doubles
2024 Japan Open Tennis Championships
Final
Champions	Julian Cash Lloyd Glasspool
Runners-up	Ariel Behar Robert Galloway
Score	6–4, 4–6, [12–10]
Events
Singles Doubles
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Julian Cash and Lloyd Glasspool defeated Ariel Behar and Robert Galloway in the final, 6–4, 4–6, [12–10] to win the doubles tennis title at the 2024 Japan Open Tennis Championships.^[1][2]

Rinky Hijikata and Max Purcell were the reigning champions,^[3] but Purcell chose not to participate this year. Hijikata partnered with Alexei Popyrin, but lost in the first round to Hugo Nys and Jan Zieliński.

	First round							Quarterfinals							Semifinals							Final
	1	N Lammons J Withrow	66	6	[10]
	WC	K Nishikori R Sakamoto	78	4	[6]			1	N Lammons J Withrow	78	4	[7]
		A Behar R Galloway	6	3	[10]				A Behar R Galloway	66	6	[10]
		A Pavlásek J-J Rojer	4	6	[5]											A Behar R Galloway	w/o
	3	S Doumbia F Reboul	6	3	[10]											J Draper T Macháč
		S Gillé J Vliegen	3	6	[3]			3	S Doumbia F Reboul	7	2	[8]
	Q	A Erler M Middelkoop	6	64	[8]				J Draper T Macháč	5	6	[10]
		J Draper T Macháč	4	77	[10]																		A Behar R Galloway	4	6	[10]
		B Shelton J Thompson	77	6																			J Cash L Glasspool	6	4	[12]
	WC	Y Nishioka K Uesugi	63	2					B Shelton J Thompson
		J Cash L Glasspool	5	6	[10]				J Cash L Glasspool	w/o
	4	M González A Molteni	7	3	[5]											J Cash L Glasspool	6	6
		L Darderi TM Etcheverry	3	77	[7]											A Michelsen A Tabilo	3	3
		A Michelsen A Tabilo	6	65	[10]				A Michelsen A Tabilo	7	3	[10]
		R Hijikata A Popyrin	4	78	[11]			2	H Nys J Zieliński	5	6	[7]
	2	H Nys J Zieliński	6	66	[13]

1. Alexander Erler / Matwé Middelkoop

	First round							Qualifying competition
	1	Nicolás Barrientos Skander Mansouri	6	6
	WC	Shintaro Mochizuki Takeru Yuzuki	3	2
								1	Nicolás Barrientos Skander Mansouri	4	4
								2	Alexander Erler Matwé Middelkoop	6	6
		Evan King Reese Stalder	2	4
	2	Alexander Erler Matwé Middelkoop	6	6

• Main draw
• Qualifying draw