Singles
2018 Challenger La Manche
Champion	Maximilian Marterer
Runner-up	Constant Lestienne
Score	6–4, 7–5

Mathias Bourgue was the defending champion but lost in the second round to Constant Lestienne.

Maximilian Marterer won the title after defeating Lestienne 6–4, 7–5 in the final.

Seeds

Draw

Finals

	Semifinals							Final
		Mats Moraing	3	4
	WC	Constant Lestienne	6	6
								WC	Constant Lestienne	4	5
								2	Maximilian Marterer	6	7
	4	Matteo Berrettini	4	67
	2	Maximilian Marterer	6	79

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	G Simon	6	77
		B Bonzi	4	65				1	G Simon	4	4
		G Oliveira	5	62					M Moraing	6	6
		M Moraing	7	77												M Moraing	6	6
	WC	A Hoang	6	4	67										Q	M Ymer	2	2
	Q	M Ymer	3	6	79			Q	M Ymer	6	6
		G Sakharov	6	6					G Sakharov	4	4
	8	C Hemery	2	1																			M Moraing	3	4
	3/Alt	M Jaziri	6	6																		WC	C Lestienne	6	6
	WC	G Blancaneaux	4	4				3/Alt	M Jaziri	68	2
		T Kamke	77	6					T Kamke	710	6
		V Šafránek	61	4												T Kamke	3	6	3
	WC	C Lestienne	6	6											WC	C Lestienne	6	4	6
		D Novak	1	2				WC	C Lestienne	6	1	6
		M Bourgue	6	6					M Bourgue	2	6	3
	6	N Gombos	3	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	K de Schepper	6	3	6
	WC	C Denolly	3	6	4			7	K de Schepper	w/o
		C Taberner	1	1					A Vatutin
		A Vatutin	6	6											7	K de Schepper	4	5
		A Pavlásek	6	2	6										4	M Berrettini	6	7
	Q	R Boutillier	4	6	4				A Pavlásek	3	63
	LL	Maxime Tabatruong	77	5	4			4	M Berrettini	6	77
	4	M Berrettini	63	7	6																	4	M Berrettini	4	67
	5	O Otte	6	6																		2	M Marterer	6	79
	Q	J Clarke	2	2				5	O Otte	4	6	3
		K Majchrzak	3	1r				Q	A Popyrin	6	3	6
	Q	A Popyrin	6	2											Q	A Popyrin	2	4
		T Brkić	62	2											2	M Marterer	6	6
		L Vanni	77	6					L Vanni	4	3
		J Munar	3	64				2	M Marterer	6	6
	2	M Marterer	6	77

References

• Main Draw
• Qualifying Draw