Singles
2021 Florianópolis Challenger
Final
Champion	Igor Marcondes
Runner-up	Hugo Dellien
Score	6–2, 6–4
Events
Singles Doubles
Florianópolis Challenger · 2023 →

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

Igor Marcondes won the title after defeating Hugo Dellien 6–2, 6–4 in the final.

	Semifinals							Final
	Q	Igor Marcondes	77	3	6
	4	Juan Ignacio Londero	65	6	4
								Q	Igor Marcondes	6	6
								2	Hugo Dellien	2	4
		Genaro Alberto Olivieri	4	6	3
	2	Hugo Dellien	6	2	6

	First round							Second round							Quarterfinals							Semifinals
	1	P Cuevas	77	6
		N Álvarez Varona	63	2				1	P Cuevas	6	65	6
		A González	1	3				Alt	M Zukas	4	77	4
	Alt	Matías Zukas	6	6											1	P Cuevas	6	1r
		O Luz	6	67	6										Q	I Marcondes	2	4
		R Cid Subervi	4	79	3				O Luz	1	4
	Q	I Marcondes	6	6				Q	I Marcondes	6	6
	7	A Collarini	3	3																		Q	I Marcondes	77	3	6
	4	JI Londero	7	7																		4	JI Londero	65	6	4
	WC	G Heide	5	5				4	JI Londero	6	6
		G Clezar	3	77	2				J Nikles	1	4
		J Nikles	6	61	6										4	JI Londero	6	6
		D Dutra da Silva	6	6												D Dutra da Silva	4	3
	Q	Wilson Leite	3	4					D Dutra da Silva	2	7	6
	Alt	L Darderi	5	4				5	N Kicker	6	5	4
	5	N Kicker	7	6

	First round							Second round							Quarterfinals							Semifinals
	8	JP Ficovich	3	0
	Q	N Barrientos	6	6				Q	N Barrientos	77	6
	WC	P Boscardin Dias	6	5	2			Alt	G Villanueva	63	1
	Alt	G Villanueva	4	7	6										Q	N Barrientos	2	4
	WC	M Alves	65	4												GA Olivieri	6	6
		GA Olivieri	77	6					GA Olivieri	6	7
		M Pucinelli de Almeida	6	6					M Pucinelli de Almeida	1	5
	3	T Seyboth Wild	4	2																			GA Olivieri	4	6	3
	6	P Cachin	5	4																		2	H Dellien	6	2	6
		Facundo Juárez	7	6					F Juárez	3	7	6
		F Díaz Acosta	6	6					F Díaz Acosta	6	5	2
		K Uchida	4	3												F Juárez	6	4	1
		P Krstin	7	1	2										2	H Dellien	4	6	6
		H Casanova	5	6	6				H Casanova	0	3
	Q	F Zeballos	60	2				2	H Dellien	6	6
	2	H Dellien	77	6

• Main draw
• Qualifying draw