Singles
2021 Amex-Istanbul Challenger
Champion	Arthur Rinderknech
Runner-up	Benjamin Bonzi
Score	4–6, 7–6(7–1), 7–6(7–3)

Ilya Ivashka was the defending champion^[1] but chose not to defend his title.

Arthur Rinderknech won the title after defeating Benjamin Bonzi 4–6, 7–6^(7–1), 7–6^(7–3) in the final.

Seeds

Draw

Finals

	Semifinals							Final
	7	Jozef Kovalík	5	4
	Q	Arthur Rinderknech	7	6
								Q	Arthur Rinderknech	4	77	77
									Benjamin Bonzi	6	61	63
		Benjamin Bonzi	77	6
		Mohamed Safwat	61	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	DE Galán	65	3
	Q	J Menezes	77	6				Q	J Menezes	2	65
	WC	E Kırkın	6	6				WC	E Kırkın	6	77
		P Lorenzi	4	2											WC	E Kırkın	77	0	63
		B Zapata Miralles	4	2											7	J Kovalík	65	6	77
		C Taberner	6	6					C Taberner	64	0
	WC	A Çelikbilek	5	6	4			7	J Kovalík	77	6
	7	J Kovalík	7	2	6																	7	J Kovalík	5	4
	4	F Bagnis	6	6																		Q	A Rinderknech	7	6
		Zh Zhang	4	1				4	F Bagnis	5	2
		M-A Hüsler	2	6	6				M-A Hüsler	7	6
	LL	D Istomin	6	2	4											M-A Hüsler	5	3
		B Nakashima	3	6	6										Q	A Rinderknech	7	6
	WC	C İlkel	6	4	3				B Nakashima	79	1	4
	Q	A Rinderknech	6	3				Q	A Rinderknech	67	6	6
	5	P Gunneswaran	4	2r

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	L Musetti	6	78
		D Petrović	4	66				6	L Musetti	1	4
		B Rola	4	1r					B Bonzi	6	6
		B Bonzi	6	2												B Bonzi	65	6	7
		L Giustino	7	77											3	A Hoang	77	1	5
		A Giannessi	5	65					L Giustino	4	4
		E Gómez	77	2	4			3	A Hoang	6	6
	3	A Hoang	63	6	6																		B Bonzi	77	6
	8	G Soeda	6	6																			M Safwat	61	4
		A Tabilo	3	3				8	G Soeda	7	4	77
	Q	L Rosol	4	63					T Griekspoor	5	6	62
		T Griekspoor	6	77											8	G Soeda
	Q	J Clarke	3	5												M Safwat	w/o
		F Gaio	6	7					F Gaio	64	5
		M Safwat	6	6					M Safwat	77	7
	2	T Seyboth Wild	4	1

References

External links

• Main draw
• Qualifying draw