Singles
2017 Challenger Ciudad de Guayaquil
Champion	Gerald Melzer
Runner-up	Facundo Bagnis
Score	6–3, 6–1

Nicolás Kicker was the defending champion but lost in the quarterfinals to Facundo Bagnis.

Gerald Melzer won the title after defeating Bagnis 6–3, 6–1 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	Alt	Hugo Dellien	0	4
	7	Gerald Melzer	6	6
								7	Gerald Melzer	6	6
									Facundo Bagnis	3	1
	6	Gastão Elias	5	4
		Facundo Bagnis	7	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	V Estrella Burgos	3	6	6
	WC	E Gómez	6	1	4			1	V Estrella Burgos	4	2
	Alt	J Souza	3	63					M Arévalo	6	6
		M Arévalo	6	77												M Arévalo	63	63
		A Balázs	4	4											Alt	H Dellien	77	77
	Alt	H Dellien	6	6				Alt	H Dellien	6	6
		F Coria	5	66				5	C Berlocq	4	4
	5	C Berlocq	7	78																		Alt	H Dellien	0	4
	4	M Cecchinato	3	2																		7	G Melzer	6	6
		B Rola	6	6					B Rola	2	77	67
		R Olivo	5	0r				WC	R Quiroz	6	61	79
	WC	R Quiroz	7	3											WC	R Quiroz	1	4
		A Collarini	3	2r											7	G Melzer	6	6
	Q	M Cuevas	6	4				Q	M Cuevas	6	2	2
	Q	JP Ficovich	2	1				7	G Melzer	3	6	6
	7	G Melzer	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	G Elias	6	77
		J Kovalík	4	65				6	G Elias	6	66	6
		J Domingues	3	6	6				J Domingues	3	78	2
		G Oliveira	6	2	3										6	G Elias	6	6
	Q	G Lama	7	6												G Andreozzi	3	3
	WC	JP Varillas	5	3				Q	G Lama	4	2
		G Andreozzi	3	7	6				G Andreozzi	6	6
	3	R Carballés Baena	6	5	2																	6	G Elias	5	4
	8	C Ruud	6	6																			F Bagnis	7	6
		M González	4	4				8	C Ruud	1	2
		F Bagnis	77	2					F Bagnis	6	6
		DE Galán	63	2r												F Bagnis	6	6
		Í Cervantes	6	4	0										2	N Kicker	3	4
	WC	J Hernández-Fernández	3	6	6			WC	J Hernández-Fernández	66	0
	Q	D Kuzmanov	4	4				2	N Kicker	78	6
	2	N Kicker	6	6

References

• Main Draw
• Qualifying Draw