Singles
2018 ATP Lyon Open
Final
Champion	Dominic Thiem
Runner-up	Gilles Simon
Score	3–6, 7–6(7–2), 6–1
Details
Draw	28 (4 Q / 3 WC )
Seeds	8
Events
Singles Doubles
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Jo-Wilfried Tsonga was the defending champion, but due to injury did not defend his title.

Dominic Thiem won the title, defeating Gilles Simon in the final, 3–6, 7–6^(7–2), 6–1.

The top four seeds receive a bye into the second round.

	Semifinals							Final
	1	Dominic Thiem	6	5	6
		Dušan Lajović	4	7	4
								1	Dominic Thiem	3	77	6
									Gilles Simon	6	62	1
		Gilles Simon	6	78
		Cameron Norrie	1	66

	First round							Second round							Quarterfinals							Semifinals
								1	D Thiem	6	6
		R Carballés Baena	77	64	6				R Carballés Baena	2	4
	Q	L Đere	63	77	3										1	D Thiem	64	77	6
	WC	C Moutet	77	4	3											G García López	77	60	4
		C Hemery	64	6	6				C Hemery	64	3
		G García López	6	4	6				G García López	77	6
	5/WC	A Mannarino	3	6	1																	1	D Thiem	6	5	6
																							D Lajović	4	7	4
								3	J Sock	66	2
		T Fritz	6	6					T Fritz	78	6
		M Ebden	4	2												T Fritz	5	1
		D Lajović	6	6												D Lajović	7	6
		H Zeballos	4	2					D Lajović	6	7
	Q	F Horanský	6	3	6			Q	F Horanský	4	5
	7	J Sousa	4	6	4

	First round							Second round							Quarterfinals							Semifinals
	LL	F Coria	4	6	7
		N Kicker	6	1	5			LL	F Coria	2	3
	WC	G Barrère	2	3					M Kukushkin	6	6
		M Kukushkin	6	6												M Kukushkin	6	4	65
		G Simon	6	6												G Simon	4	6	77
	Q	J Samper Montaña	4	2					G Simon	77	6
								LL	J De Loore	63	2
																							G Simon	6	78
	6	G Monfils	6	4	4																		C Norrie	1	66
		M Marterer	2	6	6				M Marterer	1	4
		C Norrie	77	6					C Norrie	6	6
	Q	J Hernández-Fernández	65	1												C Norrie	77	6
		F Delbonis	79	5	4										2	J Isner	61	4
		R Albot	67	7	6				R Albot	63	3
								2	J Isner	77	6

	First round							Qualifying competition
	1	Laslo Đere	6	6
		Yannick Mertens	4	3
								1	Laslo Đere	7	6
									Joris De Loore	5	4
		Joris De Loore	4	6	7
	5	Maxime Janvier	6	3	5

	First round							Qualifying competition
	2	Roberto Quiroz	4	2
		Filip Horanský	6	6
									Filip Horanský	6	6
								WC	Antoine Cornut-Chauvinc	1	3
	WC	Antoine Cornut-Chauvinc	5	6	6
	6	Steven Diez	7	2	1

	First round							Qualifying competition
	3	José Hernández-Fernández	77	6
		Tristan Lamasine	62	4
								3	José Hernández-Fernández	6	6
								7	Federico Coria	2	4
		Axel Michon	3	0
	7	Federico Coria	6	6

	First round							Qualifying competition
	4	Alejandro González	6	3	5
		Jordi Samper Montaña	3	6	7
									Jordi Samper Montaña	6	4	6
								WC	Matteo Martineau	3	6	3
	WC	Matteo Martineau	6	3	6
	8	Evgeny Karlovskiy	3	6	3

• Main Draw
• Qualifying Draw