Singles
2023 Tennis Open Karlsruhe
Final
Champion	Alejandro Tabilo
Runner-up	Giulio Zeppieri
Score	2–6, 1–0 ret.
Events
Singles Doubles
Tennis Open Karlsruhe · 2024 →

This was the first edition of the tournament.^[1]

Alejandro Tabilo won the title after Giulio Zeppieri retired leading 6–2, 0–1 in the final.

	Semifinals							Final
	1	Zsombor Piros	6	3	3
	4	Giulio Zeppieri	2	6	6
								4	Giulio Zeppieri	6	0r
								8	Alejandro Tabilo	2	1
	6	Timofey Skatov	4	1
	8	Alejandro Tabilo	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	Z Piros	7	77
		G Blancaneaux	5	65				1	Z Piros	79	6
	Q	T Handel	5	7	6			Q	T Handel	67	3
	Q	Dali Blanch	7	5	0										1	Z Piros	6	2	6
		M Zekić	3	4											5	T Seyboth Wild	3	6	3
	WC	M Topo	6	6				WC	M Topo	4	2
	Q	D Yevseyev	6	3	3			5	T Seyboth Wild	6	6
	5	T Seyboth Wild	4	6	6																	1	Z Piros	6	3	3
	4	G Zeppieri	6	7																		4	G Zeppieri	2	6	6
	Q	A Santillan	3	5				4	G Zeppieri	4	6	6
		H Casanova	3	5					B Paire	6	3	4
		B Paire	6	7											4	G Zeppieri	6	6
		M Geerts	6	3	5										7	I Gakhov	1	4
		R Molleker	3	6	7				R Molleker	4	6	3
		N Fatić	66	2				7	I Gakhov	6	3	6
	7	I Gakhov	78	6

	First round							Second round							Quarterfinals							Semifinals
	6	T Skatov	6	3	6
		C Rodesch	4	6	2			6	T Skatov	3	710	79
		JP Ficovich	0	3					V Sachko	6	68	67
		V Sachko	6	6											6	T Skatov	6	6
	Q	H Habib	6	6											Q	H Habib	3	2
		H Laaksonen	1	3				Q	H Habib	77	7
		N Gombos	77	4	3			3	P Martínez	62	5
	3	P Martínez	62	6	6																	6	T Skatov	4	1
	8	A Tabilo	7	6																		8	A Tabilo	6	6
	WC	H Squire	5	1				8	A Tabilo	6	6
	Q	O Roca Batalla	6	68	63			WC	L Gavrielides	1	1
	WC	Liam Gavrielides	2	710	77										8	A Tabilo	6	3	7
		V Kopřiva	6	3	2											L Riedi	1	6	5
		L Riedi	4	6	6				L Riedi	6	79
		A Dougaz	6	2	5			2	P Kotov	2	67
	2	P Kotov	2	6	7

• Main draw
• Qualifying draw