2023 Istanbul Challenger – Singles

Radu Albot was the defending champion but chose not to defend his title.

Singles
2023 Istanbul Challenger
Champion	Damir Džumhur
Runner-up	Lukáš Klein
Score	7–6(7–5), 6–3

Main article: 2023 Istanbul Challenger

Damir Džumhur won the title after defeating Lukáš Klein 7–6^(7–5), 6–3 in the final.

Seeds

1. Kwon Soon-woo (first round)
2. Jesper de Jong (semifinals)
3. Lukáš Klein (final)
4. Dino Prižmić (quarterfinals)
5. Gauthier Onclin (first round)
6. Harold Mayot (second round)
7. Damir Džumhur (champion)
8. Norbert Gombos (first round)

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

Finals

	Semifinals							Final
		Nick Hardt	4	3
	7	Damir Džumhur	6	6
								7	Damir Džumhur	77	6
								3	Lukáš Klein	65	3
	3	Lukáš Klein	77	62	77
	2	Jesper de Jong	62	77	65

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	S-w Kwon	0	1
		N Hardt	6	6					N Hardt	6	3	78
		S Mansouri	3	4					B Tomic	2	6	66
		B Tomic	6	6												N Hardt	1	77	4
		M Copil	2	4												A Çelikbilek	6	65	1r
	Q	Y Oliel	6	6				Q	Y Oliel	6	4	3
		A Çelikbilek	6	6					A Çelikbilek	2	6	6
	5	G Onclin	1	0																			N Hardt	4	3
	4	D Prižmić	6	63	7																	7	D Džumhur	6	6
		L Wessels	2	77	5			4	D Prižmić	4	6	6
	Q	B Bicknell	65	77	6			Q	B Bicknell	6	3	2
		M Martineau	77	63	3										4	D Prižmić	3	77	5
		Y Erel	6	1											7	D Džumhur	6	63	7
	Q	D Cukierman	2	0r					Y Erel	5	3
	WC	Tuncay Duran	4	1				7	D Džumhur	7	6
	7	D Džumhur	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	N Gombos	6	1	2
		D Yevseyev	4	6	6				D Yevseyev	6	77
	Q	L Borg	1	6	3			WC	K Kırcı	2	64
	WC	K Kırcı	6	3	6											D Yevseyev	65	77	62
		M Gengel	1	2											3	L Klein	77	63	77
	WC	E Kırkın	6	6				WC	E Kırkın	3	4
	Q	M Damm	4	6	5			3	L Klein	6	6
	3	L Klein	6	4	7																	3	L Klein	77	62	77
	6	H Mayot	77	7																		2	J de Jong	62	77	65
		A Dougaz	64	5				6	H Mayot	77	3	3
		C İlkel	5	4					G Mpetshi Perricard	61	6	6
		G Mpetshi Perricard	7	6												G Mpetshi Perricard	5	4
		J Monday	4	6	6										2	J de Jong	7	6
		K Żuk	6	1	4				J Monday	5	1
	Q	M İlhan	2	77	2			2	J de Jong	7	6
	2	J de Jong	6	63	6

External links

• Main draw
• Qualifying draw