Singles
2021 ATP Lyon Open
Champion	Stefanos Tsitsipas
Runner-up	Cameron Norrie
Score	6–3, 6–3
Draw	28 (4 Q / 3 WC )
Seeds	8

Benoît Paire was the defending champion from when the event was last held in 2019, but chose to participate in Geneva instead.^[1]

Stefanos Tsitsipas won the title, defeating Cameron Norrie in the final 6–3, 6–3.

Seeds

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

Draw

Finals

	Semifinals							Final
		Cameron Norrie	6	6
	8	Karen Khachanov	1	1
									Cameron Norrie	3	3
								2/WC	Stefanos Tsitsipas	6	6
	Alt	Lorenzo Musetti	6	3	0
	2/WC	Stefanos Tsitsipas	4	6	6

Top half

	First round							Second round							Quarterfinals							Semifinals
								1/WC	D Thiem	3	2
		C Moutet	5	3					C Norrie	6	6
		C Norrie	7	6												C Norrie	6	3	6
	LL	A Rinderknech	6	64	6										LL	A Rinderknech	3	6	3
	Q	M Ymer	3	77	2			LL	A Rinderknech	67	6	7
		A Karatsev	6	3	4			6	J Sinner	79	2	5
	6	J Sinner	0	6	6																		C Norrie	6	6
																						8	K Khachanov	1	1
								3	D Schwartzman	3	5
		R Gasquet	5	6	6				R Gasquet	6	7
	Q	G Barrère	7	4	3											R Gasquet	1	63
	Q	J Sousa	3	68											8	K Khachanov	6	77
	Q	K Majchrzak	6	710				Q	K Majchrzak	64	3
	WC	B Bonzi	1	6	64			8	K Khachanov	77	6
	8	K Khachanov	6	4	77

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	F Auger-Aliassime	63	6	5
	Alt	L Musetti	77	3	7			Alt	L Musetti	6	1	6
		P-H Herbert	65	4					S Korda	3	6	4
		S Korda	77	6											Alt	L Musetti	6	77
		A Bedene	6	6												A Bedene	3	62
		G Simon	2	3					A Bedene	77	6
								4	D Goffin	64	3
																						Alt	L Musetti	6	3	0
	5	G Monfils	7	6																		2/WC	S Tsitsipas	4	6	6
	LL	T Seyboth Wild	5	4				5	G Monfils	6	3	62
		Y Nishioka	3	6	6				Y Nishioka	4	6	77
		U Humbert	6	3	4											Y Nishioka	3	4
		T Paul	6	6											2/WC	S Tsitsipas	6	6
		J-W Tsonga	3	3					T Paul	1	4
								2/WC	S Tsitsipas	6	6

Qualifying

Qualifying draw

First qualifier

	First round							Qualifying competition
	Alt	Peter Polansky	3	4
		Alessandro Giannessi	6	6
									Alessandro Giannessi	4	3
								7	Kamil Majchrzak	6	6
		Liam Broady	6	62	4
	7	Kamil Majchrzak	4	77	6

Second qualifier

	First round							Qualifying competition
	2	Mikael Ymer	6	1	6
		Martin Kližan	3	6	4
								2	Mikael Ymer	6	4	6
								6	Thiago Seyboth Wild	4	6	1
	WC	Kyrian Jacquet	1	4
	6	Thiago Seyboth Wild	6	6

Third qualifier

	First round							Qualifying competition
	3	João Sousa	6	6
	Alt	Roberto Marcora	3	4
								3	João Sousa	6	3	6
								5	Arthur Rinderknech	4	6	3
	Alt	Kimmer Coppejans	5	6	62
	5	Arthur Rinderknech	7	3	77

Fourth qualifier

	First round							Qualifying competition
	4	Grégoire Barrère	6	6
		Evgeny Donskoy	2	3
								4	Grégoire Barrère	6	65	6
								8	Antoine Hoang	3	77	1
		Go Soeda	1	1
	8	Antoine Hoang	6	6

References

External links

• Main draw
• Qualifying draw