Doubles
2018 Gimcheon Open ATP Challenger
Champions	Ruan Roelofse John-Patrick Smith
Runners-up	Sanchai Ratiwatana Sonchat Ratiwatana
Score	6–2, 6–3

Marco Chiudinelli and Teymuraz Gabashvili were the defending champions but chose not to defend their title.

Ruan Roelofse and John-Patrick Smith won the title after defeating Sanchai and Sonchat Ratiwatana 6–2, 6–3 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	R Roelofse J-P Smith	77	7
		M Gong Y Uchiyama	65	5				1	R Roelofse J-P Smith	6	6
	WC	Kim Yu-seob Lim Hyung-chan	65	3					D Wu Ze Zhang	2	3
		D Wu Ze Zhang	77	6											1	R Roelofse J-P Smith	w/o
	4	C-p Hsieh C Rungkat	6	77												F Nielsen V Pospisil
	Q	Renta Tokuda W Trongcharoenchaikul	2	63				4	C-p Hsieh C Rungkat	3	3
		B Klein B Schnur	2	5					F Nielsen V Pospisil	6	6
		F Nielsen V Pospisil	6	7																		1	R Roelofse J-P Smith	6	6
	WC	Lim Min-seob Yoon Il-sang	3	3																		3	Sa Ratiwatana So Ratiwatana	2	3
		M Purcell L Saville	6	6					M Purcell L Saville	1	4
		T Chen C-h Yi	1	6	[8]			3	Sa Ratiwatana So Ratiwatana	6	6
	3	Sa Ratiwatana So Ratiwatana	6	4	[10]										3	Sa Ratiwatana So Ratiwatana	3	6	[10]
	WC	Choi Jae-won Moon Ju-hae	2	3											2	A Bury H-y Peng	6	3	[4]
		R Gonzales J Jung	6	6					R Gonzales J Jung	2	2
		T Matsui M McDonald	5	1				2	A Bury H-y Peng	6	6
	2	A Bury H-y Peng	7	6

References

• Main Draw
• Qualifying Draw