Leylah Fernandez defeated Kateřina Siniaková in the final, 3–6, 6–4, 6–4 to win the singles tennis title at the 2023 Hong Kong Tennis Open.^[1]

Dayana Yastremska was the defending champion from when the tournament was last held in 2018,^[2] but lost to Mirra Andreeva in the first round.^[3]

	Semifinals							Final
		Leylah Fernandez	6	7
	5	Anna Blinkova	2	5
									Leylah Fernandez	3	6	6
									Kateřina Siniaková	6	4	4
	6	Martina Trevisan	4	2
		Kateřina Siniaková	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	V Azarenka	6	3	0r
		L Fernandez	2	6	0				L Fernandez	3	6	6
		M Andreeva	6	6					M Andreeva	6	1	3
		D Yastremska	4	3												L Fernandez	77	6
	Q	A Korneeva	6	2	6											L Fruhvirtová	62	2
		V Savinykh	4	6	3			Q	A Korneeva	3	5
		L Fruhvirtová	3	6	6				L Fruhvirtová	6	7
	7	P Stearns	6	4	4																		L Fernandez	6	7
	4	Xin Wang	6	4																		5	A Blinkova	2	5
		E Avanesyan	2	1r				4	Xin Wang	4	6	1
	WC	H-c Wu	1	0					S Sorribes Tormo	6	4	6
		S Sorribes Tormo	6	6												S Sorribes Tormo	63	3
		P Hon	7	7											5	A Blinkova	77	6
	WC	E Chong	5	5					P Hon	1	3
		Y Putintseva	4	6	1r			5	A Blinkova	6	6
	5	A Blinkova	6	2	5

	First round							Second round							Quarterfinals							Semifinals
	6	M Trevisan	7	6
		C Bucșa	5	2				6	M Trevisan	6	64	6
	Q	A Danilina	2	2					M Fręch	3	77	3
		M Fręch	6	6											6	M Trevisan	6	6
	Q	S Lansere	6	6											3	E Mertens	4	3
	WC	C Wong	4	0				Q	S Lansere	3	65
	Q	D Saville	1	4				3	E Mertens	6	77
	3	E Mertens	6	6																		6	M Trevisan	4	2
	8	V Gracheva	3	2																			K Siniaková	6	6
		K Rakhimova	6	6					K Rakhimova	77	3	1
		Xiy Wang	3	67					K Siniaková	63	6	6
		K Siniaková	6	79												K Siniaková	77	6
		A Pavlyuchenkova	6	6												A Pavlyuchenkova	61	4
		J Fett	0	0					A Pavlyuchenkova	7	1	6
		A Sasnovich	63	6	63			2	B Haddad Maia	5	6	1
	2	B Haddad Maia	77	3	77

	First round							Qualifying competition
	1	Alina Korneeva	7	6
		Amina Anshba	5	0
								1	Alina Korneeva	6	6
								7	Conny Perrin	3	4
		Ekaterina Yashina	1	0
	7	Conny Perrin	6	6

	First round							Qualifying competition
	2	Yang Ya-yi	7	6
		Dasha Ivanova	5	3
								2	Yang Ya-yi	3	6	4
								6	Sofya Lansere	6	4	6
		Ng Man-ying	1	2
	6	Sofya Lansere	6	6

	First round							Qualifying competition
	3	Dalila Jakupović	6	6
	WC	Lai Ching-laam	0	3
								3	Dalila Jakupović	6	5	3
								5	Daria Saville	4	7	6
		Tsao Chia-yi	2	2
	5	Daria Saville	6	6

	First round							Qualifying competition
	4	Karman Thandi	62	77	2
		Anna Danilina	77	64	6
									Anna Danilina	6	6
								8	Daria Lodikova	4	2
	WC	Che Sin-yu	1	2
	8	Daria Lodikova	6	6

• Main draw
• Qualifying draw