2023 Curitiba Challenger – Singles

Singles
2023 Curitiba Challenger
Champion	Hugo Dellien
Runner-up	Oliver Crawford
Score	7–6(8–6), 4–6, 7–6(7–1)

Agustín Velotti was the defending champion from when the tournament was last held in 2016^[1] but didn't defend his title as he retired from professional tennis.

Hugo Dellien won the title after defeating Oliver Crawford 7–6^(8–6), 4–6, 7–6^(7–1) in the final.

	Semifinals							Final
	5	Hugo Dellien	65	6	6
		Guido Andreozzi	77	2	3
								5	Hugo Dellien	78	4	77
									Oliver Crawford	66	6	61
	9	Luciano Darderi	2	3
		Oliver Crawford	6	6

	First round							Second round							Quarterfinals							Semifinals
	1	JM Cerúndolo	3	5
	WC	Wilson Leite	6	7				WC	W Leite	63	4
	Q	M Alves	77	3	4				S Rodríguez Taverna	77	6
		S Rodríguez Taverna	62	6	6											S Rodríguez Taverna	2	3
		JL Reis da Silva	6	6											5	H Dellien	6	6
	Q	A Huertas del Pino	4	4					JL Reis da Silva	2	3
		E Ribeiro	4	4				5	H Dellien	6	6
	5	H Dellien	6	6																		5	H Dellien	65	6	6
	4	V Kopřiva	0	64																			G Andreozzi	77	2	3
		L Neumayer	6	77					L Neumayer	5	3
		RA Burruchaga	6	6					RA Burruchaga	7	6
	WC	Gustavo Ribeiro de Almeida	4	1												RA Burruchaga	4	5
	Q	Gilbert Klier Júnior	2	0												G Andreozzi	6	7
		G Andreozzi	6	6					G Andreozzi	6	77
	Q	D Dutra da Silva	66	1				8	C Ugo Carabelli	2	64
	8	C Ugo Carabelli	78	6

	First round							Second round							Quarterfinals							Semifinals
	9	L Darderi	65	6	6
		JP Ficovich	77	2	1			9	L Darderi	6	6
	Q	P Boscardin Dias	65	2					R Olivo	4	4
		R Olivo	77	6											9	L Darderi	6	6
	WC	O Luz	6	7											WC	O Luz	4	0
		M Dellien	1	5				WC	O Luz	6	6
	Q	Nicolas Zanellato	4	4				3	F Comesaña	1	4
	3	F Comesaña	6	6																		9	L Darderi	2	3
	6	F Meligeni Alves	78	6																			O Crawford	6	6
		B Kuzuhara	66	4				6	F Meligeni Alves	6	5	4
		O Crawford	6	6					O Crawford	3	7	6
		JB Torres	1	3												O Crawford	78	2	6
	Alt	C Taberner	2	6	66											D Svrčina	66	6	1
		D Svrčina	6	2	78				D Svrčina	6	78
		M Pucinelli de Almeida	2	6	1			2	TA Tirante	4	66
	2	TA Tirante	6	3	6

• Main draw
• Qualifying draw