Men's singles
2017 Challenger Banque Nationale de Gatineau
Champion	Denis Shapovalov
Runner-up	Peter Polansky
Score	6–1, 3–6, 6–3

Peter Polansky was the defending champion but lost in the final to Denis Shapovalov.

Shapovalov won the title after defeating Polansky 6–1, 3–6, 6–3 in the final.

Seeds

Draw

Finals

	Semifinals							Final
	1	Malek Jaziri	6	1	2
	5	Peter Polansky	4	6	6
								5	Peter Polansky	1	6	3
								7	Denis Shapovalov	6	3	6
		Alexander Sarkissian	3	4
	7	Denis Shapovalov	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	M Jaziri	6	6
	Alt	D Nguyen	1	0				1	M Jaziri	64	77	6
	PR	B Klahn	3	65					B Schnur	77	62	1
		B Schnur	6	77											1	M Jaziri	6	1	7
	WC	L Broady	6	2	7										8	V Millot	4	6	5
		B Rola	2	6	5			WC	L Broady	2	6	2
		Z Zhang	4	7	2			8	V Millot	6	1	6
	8	V Millot	6	5	6																	1	M Jaziri	6	1	2
	4	G Soeda	6	6																		5	P Polansky	4	6	6
		T Chen	4	4				4	G Soeda	2	1
	Q	M Giron	6	6				Q	M Giron	6	6
	WC	F Peliwo	2	0											Q	M Giron	6	3	3
		M McDonald	3	0r											5	P Polansky	3	6	6
	Q	JC Aragone	6	1				Q	JC Aragone	6	3	1
		H Moriya	2	2				5	P Polansky	3	6	6
	5	P Polansky	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	6	J Jung	3	65
		Y Uchiyama	6	77					Y Uchiyama	4	6	5
		S Diez	3	2					A Sarkissian	6	4	7
		A Sarkissian	6	6												A Sarkissian	6	4	6
		Y Bhambri	6	6												Y Bhambri	3	6	4
		T Ito	3	2					Y Bhambri	77	3
	Q	M Torpegaard	2	1				3	B Kavčič	61	1r
	3	B Kavčič	6	6																			A Sarkissian	3	4
	7	D Shapovalov	6	3	6																	7	D Shapovalov	6	6
	WC	P Bester	3	6	3			7	D Shapovalov	6	6
		E Leshem	1	0r				Alt	M Purcell	1	2
	Alt	M Purcell	6	0											7	D Shapovalov	6	3	6
	WC	B Sigouin	1	3											2	T Fabbiano	3	6	3
	Q	S Bangoura	6	6				Q	S Bangoura	5	63
		O Jasika	6	1	1			2	T Fabbiano	7	77
	2	T Fabbiano	0	6	6

References

• Main Draw
• Qualifying Draw