2021 Amex-Istanbul Challenger II – Doubles

André Göransson and David Pel were the defending champions but chose not to defend their title.

Doubles
2021 Amex-Istanbul Challenger II
Champions	Radu Albot Alexander Cozbinov
Runners-up	Antonio Šančić Artem Sitak
Score	4–6, 7–5, [11–9]

Main article: 2021 Amex-Istanbul Challenger II

Radu Albot and Alexander Cozbinov won the title after defeating Antonio Šančić and Artem Sitak 4–6, 7–5, [11–9] in the final.

Seeds

1. Antonio Šančić / Artem Sitak (final)
2. James Cerretani / Fabian Fallert (semifinals)
3. Alexander Bublik / Daniil Golubev (first round)
4. Ruben Gonzales / Hunter Johnson (semifinals)

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	A Šančić A Sitak	6	6
	WC	S Ağabigün T Altuna	2	3				1	A Šančić A Sitak	6	62	[13]
		G Blancaneaux T Fabbiano	6	6					G Blancaneaux T Fabbiano	0	77	[11]
		A Dubrivnyy E Tiurnev	3	4											1	A Šančić A Sitak	4	6	[10]
	4	R Gonzales H Johnson	6	6											4	R Gonzales H Johnson	6	2	[5]
		A Arnaboldi L Giustino	4	3				4	R Gonzales H Johnson	6	6
	WC	K Kırcı A Šetkić	1	6	[10]			WC	K Kırcı A Šetkić	0	2
		J Eysseric Q Halys	6	4	[8]																	1	A Šančić A Sitak	6	5	[9]
		Y-h Hsu E Karlovskiy	4	6	[11]																		R Albot A Cozbinov	4	7	[11]
	Alt	Elmar Ejupovic A Jecan	6	3	[9]				Y-h Hsu E Karlovskiy	5	6	[3]
		R Albot A Cozbinov	6	6					R Albot A Cozbinov	7	3	[10]
	3/WC	A Bublik D Golubev	1	2												R Albot A Cozbinov	77	6
		S Balaji H Moriya	6	6											2/PR	J Cerretani F Fallert	65	3
	PR	C-h Tseng T-l Wu	4	1					S Balaji H Moriya	6	65	[7]
		H Grenier A Müller	1	5				2/PR	J Cerretani F Fallert	3	77	[10]
	2/PR	J Cerretani F Fallert	6	7

External links

• Main draw