2021 Queen's Club Championships

• Matteo Berrettini def. Cameron Norrie, 6–4, 6–7^(5–7), 6–3

• Pierre-Hugues Herbert / Nicolas Mahut def. Reilly Opelka / John Peers, 6–4, 7–5.

• Gordon Reid def. Gustavo Fernández, 6–2, 6–2

• Joachim Gérard / Stefan Olsson def. Tom Egberink / Gustavo Fernández, 1–6, 7–6^(7–4), [10–6]

_{*per team}

Country	Player	Rank1	Seed
ITA	Matteo Berrettini	9	1
CAN	Denis Shapovalov	14	2
ITA	Jannik Sinner	19	3
AUS	Alex de Minaur	22	4
RUS	Aslan Karatsev	26	5
GBR	Dan Evans	27	6
ITA	Lorenzo Sonego	28	7
ITA	Fabio Fognini	29	8

• ¹ Rankings are as of May 24, 2021.[3]

The following players received wildcards into the main draw:

• Liam Broady
• Jack Draper
• Andy Murray[4]

The following player received entry using a protected ranking:

• Lu Yen-hsun

The following players received entry from the qualifying draw:

• Illya Marchenko
• Sebastian Ofner
• Viktor Troicki
• Aleksandar Vukic

The following player received entry as a lucky loser:

• Alejandro Tabilo

Before the tournament

• Alejandro Davidovich Fokina → replaced by Jérémy Chardy
• Milos Raonic → replaced by Frances Tiafoe
• Filip Krajinović → replaced by Alejandro Tabilo
• Diego Schwartzman → replaced by Alexei Popyrin
• Stan Wawrinka → replaced by Feliciano López

Country	Player	Country	Player	Rank1	Seed
CRO	Nikola Mektić	CRO	Mate Pavić	3	1
COL	Juan Sebastián Cabal	COL	Robert Farah	7	2
USA	Rajeev Ram	GBR	Joe Salisbury	15	3
FRA	Pierre-Hugues Herbert	FRA	Nicolas Mahut	26	4
GBR	Jamie Murray	BRA	Bruno Soares	33	5
FRA	Jérémy Chardy	FRA	Fabrice Martin	58	6
NZL	Marcus Daniell	AUT	Philipp Oswald	75	7
GBR	Ken Skupski	GBR	Neal Skupski	80	8

• ¹ Rankings are as of May 31, 2021.

The following pairs received wildcards into the doubles main draw:

• Liam Broady / Ryan Peniston
• Alastair Gray / Harri Heliövaara
• Stuart Parker / James Ward

The following pair received entry as an alternate:

• John Millman / Artem Sitak

Before the tournament

• Marcelo Arévalo / Matwé Middelkoop → replaced by Matwé Middelkoop / John-Patrick Smith
• Alexander Bublik / Taylor Fritz → replaced by Alexander Bublik / Nicholas Monroe
• Alejandro Davidovich Fokina / Albert Ramos Viñolas → replaced by Aljaž Bedene / Albert Ramos Viñolas
• Grigor Dimitrov / Feliciano López → replaced by Feliciano López / Jannik Sinner
• Laslo Đere / Filip Krajinović → replaced by John Millman / Artem Sitak
• Henri Kontinen / Édouard Roger-Vasselin → replaced by Luke Bambridge / Dominic Inglot