Singles
2018 Santaizi ATP Challenger
Final
Champion	Yuki Bhambri
Runner-up	Ramkumar Ramanathan
Score	6–3, 6–4
Events
Singles Doubles
← 2017 · Santaizi ATP Challenger · 2019 →

Lu Yen-hsun was the defending champion but chose not to defend his title.

Yuki Bhambri won the title after defeating Ramkumar Ramanathan 6–3, 6–4 in the final.^[1]

	Semifinals							Final
	8	Tatsuma Ito	6	3	4
	4	Yuki Bhambri	3	6	6
								4	Yuki Bhambri	6	6
								6	Ramkumar Ramanathan	3	4
	6	Ramkumar Ramanathan	711	6
	7	Go Soeda	69	4

	First round							Second round							Quarterfinals							Semifinals
	1	M Ebden	6	6
		T-h Yang	3	4				1	M Ebden	2	64
		J Jung	6	6					J Jung	6	77
	LL	Jacob Grills	0	3												J Jung	6	69	64
		A Bolt	65	6	3										8	T Ito	3	711	77
		S-w Kwon	77	4	6				S-w Kwon	6	64	4
		L Grigelis	77	4	3			8	T Ito	4	77	6
	8	T Ito	65	6	6																	8	T Ito	6	3	4
	4	Y Bhambri	65	6	6																	4	Y Bhambri	3	6	6
		R Ortega Olmedo	77	3	3			4	Y Bhambri	6	6
		K Majchrzak	6	2	65				M Bachinger	4	4
		M Bachinger	4	6	77										4	Y Bhambri	6	6
	WC	C-h Tseng	64	1											Q	C-h Lo	4	2
		Y Takahashi	77	6					Y Takahashi	3	77	3
	Q	Lo Chien-hsun	6	1	6			Q	C-h Lo	6	65	6
	5	Q Halys	3	6	3

	First round							Second round							Quarterfinals							Semifinals
	6	R Ramanathan	77	60	6
	Q	T Fancutt	65	77	2			6	R Ramanathan	77	63	77
		L Harris	6	77					L Harris	63	77	65
	LL	S Mukund	4	63											6	R Ramanathan	6	6
	WC	T-l Wu	6	77											3	D Sela	4	2
		A Whittington	3	61				WC	T-l Wu	3	6	3
	Q	Shuichi Sekiguchi	4	2				3	D Sela	6	1	6
	3	D Sela	6	6																		6	R Ramanathan	711	6
	7	G Soeda	77	6																		7	G Soeda	69	4
		D Kelly	64	4				7	G Soeda	6	6
	WC	T Chen	710	6				WC	T Chen	3	1
	Q	R Roelofse	68	3											7	G Soeda	77	6
	PR	S Myneni	4	77	6										2	E Donskoy	64	4
		P Gunneswaran	6	62	4			PR	S Myneni	2	4
	WC	Y-h Hsu	1	1				2	E Donskoy	6	6
	2	E Donskoy	6	6

• Main draw
• Qualifying draw