Doubles
2019 Yokkaichi Challenger
Champions	Nam Ji-sung Song Min-kyu
Runners-up	Gong Maoxin Zhang Ze
Score	6–3, 3–6, [14–12]

This was the first edition of the tournament.^[1]

Nam Ji-sung and Song Min-kyu won the title after defeating Gong Maoxin and Zhang Ze 6–3, 3–6, [14–12] in the final.

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 Gong Ze Zhang	6	4	[10]
	WC	Makoto Ochi Renta Tokuda	4	6	[6]			1	M Gong Ze Zhang	w/o
	ITF	T Fancutt D Kelly	4					ITF	T Fancutt D Kelly
		T Matsui K Uesugi	3r												1	M Gong Ze Zhang	6	6
	3	Sa Ratiwatana So Ratiwatana	6	6											3	Sa Ratiwatana So Ratiwatana	2	1
	WC	Y Shimizu N Tajima	3	4				3	Sa Ratiwatana So Ratiwatana	63	6	[10]
	ITF	Jumpei Yamasaki E Zhu	1	4				WC	S Sekiguchi S Shimabukuro	77	3	[5]
	WC	Shuichi Sekiguchi S Shimabukuro	6	6																		1	M Gong Ze Zhang	3	6	[12]
		Y-s Chung T-l Wu	6	6																			J-s Nam M-k Song	6	3	[14]
		B Lock CJ Lock	1	2					Y-s Chung T-l Wu	7	5	[9]
		J-s Nam M-k Song	6	6					J-s Nam M-k Song	5	7	[11]
	4	JP Fruttero R Gonzales	2	4												J-s Nam M-k Song	6	6
		B Ellis H Moriya	79	3	[10]											S Imai Y Takahashi	2	4
		Shintaro Imai Y Takahashi	67	6	[12]				S Imai Y Takahashi	6	6
		H Bourchier S Myneni	6	6					H Bourchier S Myneni	4	4
	2	H Heliövaara T-h Yang	4	1

References

• Main draw