Doubles
2021 Atlanta Open
Final
Champions	Reilly Opelka Jannik Sinner
Runners-up	Steve Johnson Jordan Thompson
Score	6–4, 6–7(6–8), [10–3]
Events
Singles Doubles
← 2019 · Atlanta Open · 2022 →

Dominic Inglot and Austin Krajicek were the reigning champions from when the tournament was last held in 2019,^[1] but chose not to participate this year.

Reilly Opelka and Jannik Sinner won the title, defeating Steve Johnson and Jordan Thompson in the final, 6–4, 6–7^(6–8), [10–3].

	First round							Quarterfinals							Semifinals							Final
	1	L Bambridge K Skupski	6	66	[10]
		L Glasspool N Monroe	3	78	[6]			1	L Bambridge K Skupski	6	4	[6]
		A Göransson F Nielsen	64	6	[9]				A Popyrin M Reid	3	6	[10]
		A Popyrin M Reid	77	2	[11]											A Popyrin M Reid	6	3	[8]
	3	A-u-H Qureshi D Sharan	1	3												S Johnson J Thompson	4	6	[10]
	WC	N Kyrgios J Sock	6	6				WC	N Kyrgios J Sock	3	4
		S Johnson J Thompson	6	7					S Johnson J Thompson	6	6
		N Lammons J Withrow	4	5																			S Johnson J Thompson	4	78	[3]
		M Arévalo MÁ Reyes-Varela	6	6																			R Opelka J Sinner	6	66	[10]
	WC	K Chopra A Martin	1	4					M Arévalo MÁ Reyes-Varela	6	3	[11]
		T Fritz C Norrie	2	61				4	M Ebden J-P Smith	3	6	[9]
	4	M Ebden J-P Smith	6	77												M Arévalo MÁ Reyes-Varela	3	4
		T Huey B Paire	77	77												R Opelka J Sinner	6	6
		H Heliövaara E Ruusuvuori	62	62					T Huey B Paire	64	4
		R Opelka J Sinner	6	6					R Opelka J Sinner	77	6
	2	J Erlich S González	2	2

• Main Draw