2018 ATP Lyon Open
Date	20–26 May
Edition	2nd
Category	ATP World Tour 250
Draw	28S / 16D
Prize money	€501,345
Surface	Clay / outdoor
Location	Lyon, France
Champions
Singles
Dominic Thiem[1]
Doubles
Nick Kyrgios / Jack Sock[2]
← 2017 · ATP Lyon Open · 2019 →

The 2018 Lyon Open (also known as the Open Parc Auvergne-Rhône-Alpes Lyon) was a men's tennis tournament played on outdoor clay courts. It was the second edition of the Lyon Open and part of the ATP World Tour 250 series of the 2018 ATP World Tour. It took place in the city of Lyon, France, from May 20 through May 26, 2018.^[3]

Country	Player	Rank1	Seed
AUT	Dominic Thiem	8	1
USA	John Isner	10	2
USA	Jack Sock	15	3
KOR	Chung Hyeon	20	4
FRA	Adrian Mannarino	27	5
FRA	Gaël Monfils	38	6
POR	João Sousa	48	7
AUS	John Millman	58	8

• Rankings are as of May 14, 2018.

The following players received wildcards into the singles main draw:

• Grégoire Barrère
• Adrian Mannarino
• Corentin Moutet

The following players received entry from the qualifying draw:

• Laslo Đere
• José Hernández-Fernández
• Filip Horanský
• Jordi Samper-Montaña

The following players received entry as lucky losers:

• Federico Coria
• Joris De Loore

Before the tournament

• Chung Hyeon → replaced by Joris De Loore
• Karen Khachanov → replaced by Cameron Norrie
• Leonardo Mayer → replaced by Mikhail Kukushkin
• Daniil Medvedev → replaced by Dušan Lajović
• Viktor Troicki → replaced by Calvin Hemery
• Jo-Wilfried Tsonga → replaced by Federico Coria

Country	Player	Country	Player	Rank1	Seed
PAK	Aisam-ul-Haq Qureshi	NED	Jean-Julien Rojer	42	1
IND	Rohan Bopanna	FRA	Édouard Roger-Vasselin	50	2
CHI	Julio Peralta	ARG	Horacio Zeballos	69	3
POL	Marcin Matkowski	JPN	Ben McLachlan	70	4

• Rankings are as of May 14, 2018.

The following pairs received wildcards into the doubles main draw:

• Grégoire Barrère / Tristan Lamasine
• Jonathan Eysseric / Hugo Nys

• Dominic Thiem defeated Gilles Simon, 3–6, 7–6^(7–2), 6–1

• Nick Kyrgios / Jack Sock defeated Roman Jebavý / Matwé Middelkoop, 7–5, 2–6, [11–9]