2021 Nottingham Open

The 2021 Nottingham Open (also known as the Viking Open Nottingham for sponsorship purposes) was a professional tennis tournament played on outdoor grass courts. It was the 13th edition of the event for women and the 25th edition for men. It was classified as a WTA 250 on the 2021 WTA Tour for the women, and as an ATP Challenger Tour event for the men. The event took place at the Nottingham Tennis Centre in Nottingham, United Kingdom from 6 through 13 June 2021.

Men's singles

 * 🇺🇸 Frances Tiafoe def. 🇺🇸 Denis Kudla 6–1, 6–3.

Women's singles

 * 🇬🇧 Johanna Konta def. 🇨🇳 Zhang Shuai 6–2, 6–1

Men's doubles

 * 🇦🇺 Matt Reid / 🇬🇧 Ken Skupski def. 🇦🇺 Matthew Ebden / 🇦🇺 John-Patrick Smith 4–6, 7–5, [10–6].

Women's doubles

 * 🇺🇦 Lyudmyla Kichenok / 🇯🇵 Makoto Ninomiya def. 🇺🇸 Caroline Dolehide / 🇦🇺 Storm Sanders, 6–4, 6–7(3–7), [10–8]

Seeds

 * 1 Rankings are as of 31 May 2021.

Other entrants
The following players received wildcards into the main draw:
 * 🇬🇧 Jay Clarke
 * 🇬🇧 Dan Evans
 * 🇬🇧 Ryan Peniston

The following players received entry from the qualifying draw:
 * 🇷🇴 Marius Copil
 * 🇦🇺 Matthew Ebden
 * Borna Gojo
 * 🇦🇺 Aleksandar Vukic

Seeds

 * 1 Rankings are as of 31 May 2021.

Other entrants
The following players received wildcards into the main draw:
 * 🇬🇧 Katie Boulter
 * 🇬🇧 Jodie Burrage
 * 🇬🇧 Francesca Jones
 * 🇬🇧 Emma Raducanu

The following players received entry from the qualifying draw:
 * 🇬🇧 Sarah Beth Grey
 * 🇺🇦 Kateryna Kozlova
 * 🇬🇧 Tara Moore
 * Lesley Pattinama Kerkhove
 * 🇮🇳 Ankita Raina
 * 🇬🇧 Eden Silva
 * 🇺🇸 CoCo Vandeweghe
 * 🇺🇸 Katie Volynets

The following players received entry as lucky losers:
 * 🇮🇹 Martina Di Giuseppe
 * 🇪🇸 Georgina García Pérez
 * 🇷🇺 Marina Melnikova

Withdrawals

 * Before the tournament
 * 🇪🇸 Paula Badosa → replaced by 🇯🇵 Kurumi Nara
 * Belinda Bencic → replaced by 🇺🇸 Caty McNally
 * 🇺🇸 Danielle Collins → replaced by 🇷🇺 Marina Melnikova
 * 🇯🇵 Misaki Doi → replaced by 🇺🇸 Kristie Ahn
 * 🇮🇹 Camila Giorgi → replaced by 🇮🇹 Martina Di Giuseppe
 * Polona Hercog → replaced by 🇪🇸 Georgina García Pérez
 * Hsieh Su-wei → replaced by 🇦🇺 Arina Rodionova
 * 🇺🇦 Marta Kostyuk → replaced by 🇨🇳 Wang Yafan
 * 🇺🇸 Ann Li → replaced by 🇧🇬 Viktoriya Tomova
 * 🇵🇱 Magda Linette → replaced by 🇨🇴 Camila Osorio
 * 🇺🇸 Jessica Pegula → replaced by 🇨🇳 Wang Xiyu
 * 🇨🇿 Kristýna Plíšková → replaced by 🇦🇺 Maddison Inglis
 * 🇰🇿 Yulia Putintseva → replaced by 🇬🇧 Harriet Dart
 * 🇺🇸 Shelby Rogers → replaced by 🇦🇺 Lizette Cabrera
 * 🇰🇿 Elena Rybakina → replaced by 🇫🇷 Océane Dodin
 * Clara Tauson → replaced by 🇰🇿 Zarina Diyas
 * 🇦🇺 Ajla Tomljanović → replaced by 🇨🇳 Wang Xinyu
 * 🇺🇸 Venus Williams → replaced by 🇮🇹 Giulia Gatto-Monticone
 * 🇨🇳 Wang Qiang → replaced by 🇷🇺 Anastasia Gasanova
 * 🇨🇳 Zheng Saisai → replaced by Leonie Küng

Retirements

 * 🇺🇸 Kristie Ahn

Seeds

 * 1 Rankings are as of 31 May 2021.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇬🇧 Katie Boulter / 🇬🇧 Jodie Burrage
 * 🇬🇧 Naomi Broady / 🇬🇧 Harriet Dart

The following pair received entry using a protected ranking:
 * 🇺🇸 Christina McHale / 🇺🇸 CoCo Vandeweghe

The following pair received entry as an alternate:
 * 🇨🇿 Marie Bouzková / 🇵🇱 Alicja Rosolska

Withdrawals

 * Before the tournament
 * 🇺🇸 Lauren Davis / 🇺🇸 Caty McNally → replaced by 🇨🇿 Marie Bouzková / 🇵🇱 Alicja Rosolska
 * 🇨🇦 Sharon Fichman / 🇲🇽 Giuliana Olmos → replaced by 🇫🇷 Elixane Lechemia / 🇺🇸 Ingrid Neel
 * 🇩🇪 Vivian Heisen / 🇨🇿 Květa Peschke → replaced by 🇬🇧 Tara Moore / 🇬🇧 Eden Silva
 * Dalila Jakupović / 🇷🇺 Yana Sizikova → replaced by 🇬🇧 Sarah Beth Grey / 🇬🇧 Emily Webley-Smith
 * 🇦🇺 Ellen Perez / 🇺🇸 Danielle Collins → replaced by 🇬🇧 Naiktha Bains / 🇬🇧 Samantha Murray Sharan
 * 🇨🇳 Xu Yifan / 🇨🇳 Zhang Shuai → replaced by 🇦🇺 Ellen Perez / 🇨🇳 Zhang Shuai


 * During the tournament
 * 🇺🇸 Kaitlyn Christian / 🇯🇵 Nao Hibino
 * 🇬🇧 Johanna Konta / Donna Vekić