Doubles
2021 İstanbul Cup
Champions	Veronika Kudermetova Elise Mertens
Runners-up	Nao Hibino Makoto Ninomiya
Score	6–1, 6–1

Alexa Guarachi and Desirae Krawczyk were the defending champions, but Guarachi chose not to participate this year and Krawczyk chose to compete in Stuttgart instead.

Veronika Kudermetova and Elise Mertens won the title, defeating Nao Hibino and Makoto Ninomiya in the final, 6–1, 6–1.

Seeds

Draw

Draw

	First round							Quarterfinals							Semifinals							Final
	1	V Kudermetova E Mertens	6	6
	WC	Ç Büyükakçay P Özgen	2	2				1	V Kudermetova E Mertens	6	4	[10]
		A Danilina K Rakhimova	3	6	[6]				D Jakupović Y Sizikova	4	6	[8]
		D Jakupović Y Sizikova	6	3	[10]										1	V Kudermetova E Mertens	6	6
	4	A Pavlyuchenkova A Potapova	5	6	[10]										4	A Pavlyuchenkova A Potapova	3	1
		B Haas Q Wang	7	3	[3]			4	A Pavlyuchenkova A Potapova	7	6
		M Kato K Piter	4	6	[5]			PR	V Golubic A Panova	5	3
	PR	V Golubic A Panova	6	4	[10]																	1	V Kudermetova E Mertens	6	6
		N Broady E Lechemia	0	3																		2	N Hibino M Ninomiya	1	1
		L Marozava A Mitu	6	6					L Marozava A Mitu	6	1	[3]
		P Kania-Choduń J Wachaczyk	6	6					P Kania-Choduń J Wachaczyk	2	6	[10]
	3	L Arruabarrena R Voráčová	2	2												P Kania-Choduń J Wachaczyk	3	2
		E-s Liang S Zheng	2	7	[8]										2	N Hibino M Ninomiya	6	6
	WC	E Vesnina V Zvonareva	6	5	[10]			WC	E Vesnina V Zvonareva	3	1
	PR	B Gumulya J Rompies	2	2				2	N Hibino M Ninomiya	6	6
	2	N Hibino M Ninomiya	6	6

References

• Main Draw