Singles
2023 Porsche Tennis Grand Prix
Final
Champion	Iga Świątek
Runner-up	Aryna Sabalenka
Score	6–3, 6–4
Details
Draw	28 (3WC, 4Q)
Seeds	8
Events
Singles Doubles
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Defending champion Iga Świątek defeated Aryna Sabalenka in a rematch of the previous year's final, 6–3, 6–4 to win the singles tennis title at the 2023 Stuttgart Open.^[1] The final marked the first time the top two players in the world contested a WTA Tour final since the 2018 Australian Open, and the first such match overall since 2019 WTA Finals. This was also the first time since 2005 that the two defending Stuttgart finalists returned to contest the following year's final.

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

	Semifinals							Final
	1	Iga Świątek	3
	3	Ons Jabeur	0r
								1	Iga Świątek	6	6
								2	Aryna Sabalenka	3	4
		Anastasia Potapova	1	2
	2	Aryna Sabalenka	6	6

	First round							Second round							Quarterfinals							Semifinals
								1	I Świątek	6	6
		Q Zheng	6	6					Q Zheng	1	4
	LL	A Parks	4	4											1	I Świątek	4	6	6
		E Alexandrova	67	65												Ka Plíšková	6	1	2
		D Vekić	79	77					D Vekić	2	77	65
		Ka Plíšková	6	6					Ka Plíšková	6	65	77
	8	M Sakkari	2	3																		1	I Świątek	3
																						3	O Jabeur	0r
								3	O Jabeur	1	7	6
		J Ostapenko	6	6					J Ostapenko	6	5	3
	WC	E Raducanu	2	1											3	O Jabeur	6	6
		M Trevisan	5	1r												B Haddad Maia	3	0
		B Haddad Maia	7	1					B Haddad Maia	6	3
	WC	J Niemeier	5	3				6	E Rybakina	1	1r
	6	E Rybakina	7	6

	First round							Second round							Quarterfinals							Semifinals
	5	C Gauff	6	4	77
		V Kudermetova	2	6	63			5	C Gauff	2	3
	Q	P Martić	3	6	64				A Potapova	6	6
		A Potapova	6	3	77											A Potapova	4	6	6
	WC	T Maria	6	4	77										4	C Garcia	6	3	3
	Q	Y In-Albon	2	6	64			WC	T Maria	65	4
								4	C Garcia	77	6
																							A Potapova	1	2
	7	D Kasatkina	1	1																		2	A Sabalenka	6	6
	WC	P Badosa	6	6				WC	P Badosa	6	6
	Q	C Bucșa	3	6	6			Q	C Bucșa	1	2
	Q	T Korpatsch	6	4	0										WC	P Badosa	6	4	4
		B Krejčíková	6	6											2	A Sabalenka	4	6	6
		L Samsonova	2	0					B Krejčíková	2	3
								2	A Sabalenka	6	6

	First round							Qualifying competition
	1	Petra Martić	6	6
		Nigina Abduraimova	4	2
								1	Petra Martić	6	7
								WC	Sabine Lisicki	4	5
	WC	Sabine Lisicki	6	6
	7	Kimberly Birrell	3	4

	First round							Qualifying competition
	2	Alycia Parks	1	6	6
		Ana Konjuh	6	2	4
								2	Alycia Parks	2	4
								6	Tamara Korpatsch	6	6
		Kathinka von Deichmann	2	65
	6	Tamara Korpatsch	6	77

	First round							Qualifying competition
	3	Linda Fruhvirtová	77	77
	WC	Ella Seidel	65	64
								3	Linda Fruhvirtová	5	4
								8	Ylena In-Albon	7	6
		Mona Barthel	3	77	5
	8	Ylena In-Albon	6	62	7

	First round							Qualifying competition
	4	Katie Volynets	2	77	6
		Dayana Yastremska	6	63	3
								4	Katie Volynets	5	77	62
								5	Cristina Bucșa	7	64	77
		Noma Noha Akugue	4	4
	5	Cristina Bucșa	6	6

• Main draw
• Qualifying draw