Men's doubles
2019 Keio Challenger
Champions	Moez Echargui Skander Mansouri
Runners-up	Max Purcell Luke Saville
Score	7–6(8–6), 6–7(3–7), [10–7]

Tobias Kamke and Tim Pütz were the defending champions but chose not to defend their title.

Moez Echargui and Skander Mansouri won the title after defeating Max Purcell and Luke Saville 7–6^(8–6), 6–7^(3–7), [10–7].

Seeds

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• SE = Special exempt
• PR = Protected ranking
• ITF = ITF entry
• JE = Junior exempt
• w/o = Walkover
• r = Retired
• d = Defaulted
• SR = Special ranking

	First round							Quarterfinals							Semifinals							Final
	1	M Purcell L Saville	6	6
		G Clezar G Elias	2	3				1	M Purcell L Saville	6	6
	ITF	Shintaro Imai B Saraiva	6	6				ITF	S Imai B Saraiva	3	2
		G Oliveira K Uchida	2	2											1	M Purcell L Saville	6	6
	3	R Gonzales A Lawson	5	4												Y-s Chung S-w Kwon	4	0
	WC	T Matsui K Uesugi	7	6				WC	T Matsui K Uesugi	6	5	[4]
		Y-s Chung S-w Kwon	6	4	[10]				Y-s Chung S-w Kwon	3	7	[10]
		J Wang T-h Yang	2	6	[7]																	1	M Purcell L Saville	66	77	[7]
	WC	Masahiro Fukuda M Imamura	2	4																		ITF	M Echargui S Mansouri	78	63	[10]
	ITF	M Echargui S Mansouri	6	6				ITF	M Echargui S Mansouri	77	6
		B Ellis J Rodionov	64	66				4	I Gakhov A Pavlioutchenkov	62	4
	4	I Gakhov A Pavlioutchenkov	77	78											ITF	M Echargui S Mansouri	4	6	[10]
		JP Fruttero D Pérez Sanz	w/o												2	Sa Ratiwatana So Ratiwatana	6	3	[6]
		P Cachin H Moriya							JP Fruttero D Pérez Sanz	5	64
	WC	S Hazawa N Tajima	2	6	[5]			2	Sa Ratiwatana So Ratiwatana	7	77
	2	Sa Ratiwatana So Ratiwatana	6	3	[10]

References

• Main draw