Taylor Fritz defeated Aleksandar Vukic in the final, 7–5, 6–7^(5–7), 6–4 to win the singles tennis title at the 2023 Atlanta Open. It was his sixth ATP Tour singles title.

Alex de Minaur was the defending champion,^[1] but lost to Ugo Humbert in the quarterfinals.

The top four seeds received a bye into the second round.

	Semifinals							Final
	1	Taylor Fritz	6	7
	8	J. J. Wolf	3	5
								1	Taylor Fritz	7	65	6
									Aleksandar Vukic	5	77	4
		Aleksandar Vukic	3	77	7
	7	Ugo Humbert	6	62	5

	First round							Second round							Quarterfinals							Semifinals
								1	T Fritz	6	77
		Y Wu	6	6					Y Wu	4	65
		C Moutet	3	4											1	T Fritz	6	6
		J Thompson	65	65											PR	K Nishikori	4	2
	PR	K Nishikori	77	77				PR	K Nishikori	6	77
	Q	J Shang	6	6				Q	J Shang	4	63
	6	B Shelton	4	4																		1	T Fritz	6	7
																						8	JJ Wolf	3	5
								3	D Evans	6	63	4
	SE	J Isner	6	64	63				D Koepfer	2	77	6
		D Koepfer	3	77	77											D Koepfer	2	3
		M Cressy	6	6											8	JJ Wolf	6	6
	SE	A Michelsen	3	3					M Cressy	67	3
	Q	J Jung	2	1				8	JJ Wolf	79	6
	8	JJ Wolf	6	6

	First round							Second round							Quarterfinals							Semifinals
	5	C Eubanks	6	6
	WC	A Martin	2	4				5	C Eubanks	64	6	7
		B Nakashima	6	77					B Nakashima	77	4	5
		M Purcell	3	65											5	C Eubanks	4	4
	WC	E Quinn	65	3												A Vukic	6	6
		A Vukic	77	6					A Vukic	4	7	77
								4	Y Nishioka	6	5	63
																							A Vukic	3	77	7
	7	U Humbert	4	7	7																	7	U Humbert	6	62	5
		C Lestienne	6	5	5			7	U Humbert	78	6
	Q	L Harris	3	6	6			Q	L Harris	66	4
	Q	J Duckworth	6	3	2										7	U Humbert	77	6
	WC	G Monfils	6	3	65										2	A de Minaur	64	3
		T Kokkinakis	1	6	77				T Kokkinakis	3	4
								2	A de Minaur	6	6

	First round							Qualifying competition
	1	Michael Mmoh	4	710	6
		Tennys Sandgren	6	68	4
								1	Michael Mmoh	2	77	62
								8	Lloyd Harris	6	65	77
	WC	Donald Young	1	2
	8	Lloyd Harris	6	6

	First round							Qualifying competition
	2	James Duckworth	4	712	6
		Mitchell Krueger	6	610	3
								2	James Duckworth	6	6
								5	Gijs Brouwer	2	4
	Alt	Kevin King	3	4
	5	Gijs Brouwer	6	6

	First round							Qualifying competition
	3	Gabriel Diallo	6	6
	PR	Bradley Klahn	3	2
								3	Gabriel Diallo	6	5	61
									Jason Jung	4	7	77
		Jason Jung	77	6
	7	Shintaro Mochizuki	63	4

	First round							Qualifying competition
	4	Arthur Cazaux	6	6
	WC	Keshav Chopra	0	3
								4	Arthur Cazaux	4	77	1
								6	Shang Juncheng	6	62	6
		Yasutaka Uchiyama	64	5
	6	Shang Juncheng	77	7

• Main draw
• Qualifying draw