Singles
2017 Brest Challenger
Champion	Corentin Moutet
Runner-up	Stefanos Tsitsipas
Score	6–2, 7–6(10–8)

Norbert Gombos was the defending champion but lost in the first round to Corentin Moutet.

Moutet won the title after defeating Stefanos Tsitsipas 6–2, 7–6^(10–8) in the final.

Seeds

Draw

Finals

	Semifinals							Final
		Yannick Maden	6	62	4
	WC	Corentin Moutet	4	77	6
								WC	Corentin Moutet	6	710
								SE	Stefanos Tsitsipas	2	68
	SE	Stefanos Tsitsipas	77	77
	2	Marius Copil	62	63

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	D Medvedev	4	6	6
	SE	M Donati	6	1	3			1	D Medvedev	6	3	77
		B Bonzi	4	7	6				B Bonzi	4	6	62
		A De Greef	6	5	3										1	D Medvedev	61	4
		Y Hanfmann	6	4	4											Y Maden	77	6
		M Bourgue	3	6	6				M Bourgue	4	2
		Y Maden	77	6					Y Maden	6	6
	5	M Jaziri	64	4																			Y Maden	6	62	4
	3	N Gombos	6	4	1																	WC	C Moutet	4	77	6
	WC	C Moutet	4	6	6			WC	C Moutet	6	66	6
	Q	I Marchenko	5	3				Q	T Lamasine	4	78	3
	Q	T Lamasine	7	6											WC	C Moutet	6	6
	Alt	G Sakharov	6	6											Alt	G Sakharov	3	1
	WC	D Guez	2	4				Alt	G Sakharov	4	6	6
	WC	G Blancaneaux	4	6	1			6	L Đere	6	2	2
	6	L Đere	6	3	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	A Kuznetsov	1	3
	SE	S Tsitsipas	6	6				SE	S Tsitsipas	6	6
		U Ignatik	4	1					S Caruso	3	3
		S Caruso	6	6											SE	S Tsitsipas	77	6
		A Vatutin	6	2	1										4	J Chardy	65	4
		A Giannessi	4	6	6				A Giannessi	1	1
	LL	A Arnaboldi	3	2				4	J Chardy	6	6
	4	J Chardy	6	6																		SE	S Tsitsipas	77	77
	8	M Berrettini	6	4	77																	2	M Copil	62	63
		K Kravchuk	4	6	63			8	M Berrettini	3	0
	Q	G Mina	6	63	2			WC	U Humbert	6	6
	WC	U Humbert	3	77	6										WC	U Humbert	4	4
		A Šetkić	6	66	4										2	M Copil	6	6
		L Vanni	2	78	6				L Vanni	62	1
	Q	Y Reuter	3	4				2	M Copil	77	6
	2	M Copil	6	6

References

• Main Draw
• Qualifying Draw