2021 Monterrey Open
The 2021 Monterrey Open was a women's tennis tournament played on outdoor hard courts. It was the 13th edition of the Monterrey Open and a WTA 250 tournament on the 2021 WTA Tour. It took place at the Club Sonoma in Monterrey, Mexico, from 15 to 21 March 2021.
Champions
Singles
- Leylah [Annie Fernandez] def. Viktorija Golubic, 6–1, 6–4.
Doubles
- Caroline Dolehide / Asia Muhammad def. Heather Watson / Saisai Zheng 6–2, 6–3.
Points and prize money
Point distribution
Prize money
*per teamSingles main draw entrants
Seeds
- 1 Rankings as of 8 March 2021.
Other entrants
The following player received entry into the singles main draw using a protected ranking:
The following player received entry as a special exempt:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
- Harriet Dart
- Kristína Kučová
Withdrawals
- Victoria Azarenka → replaced by Jasmine Paolini
- Marie Bouzková → replaced by Kristína Kučová
- Coco Gauff → replaced by Varvara Gracheva
- Polona Hercog → replaced by Nina Stojanović
- Ons Jabeur → replaced by Anna Karolína Schmiedlová
- Johanna Konta → replaced by Tamara Zidanšek
- Danka Kovinić → replaced by Harriet Dart
- Magda Linette → replaced by Martina Trevisan
- Ajla Tomljanović → replaced by Zhu Lin
- Kaja Juvan
Doubles main draw entrants
Seeds
- Rankings as of March 8, 2021.
Other entrants
- Fernanda Contreras / Marcela Zacarías
- Camila Osorio / Renata Zarazúa
Withdrawals
- Marie Bouzková / Sara Sorribes Tormo → replaced by Paula Kania-Choduń / Katarzyna Piter
- Anna Kalinskaya / Viktória Kužmová → replaced by Greet Minnen / Ingrid Neel
- Anna Blinkova / Nadia Podoroska
Retirements
- Greet Minnen / Ingrid Neel