| Singles | |
|---|---|
| 2021 Solgironès Open Catalunya | |
| Champion |  Irina Khromacheva |
| Runner-up |  Arantxa Rus |
| Final score | 6–4, 1–6, 7–6(10–8) |
Wang Xiyu was the defending champion having won the previous edition in 2019 [1] but chose not to participate.
Irina Khromacheva won the title, defeating Arantxa Rus in the final, 6–4, 1–6, 7–6(10–8).
Arantxa Rus (Final)
Kaja Juvan (First round)
Viktória Kužmová (Second round)
Tímea Babos (First round)
Anna-Lena Friedsam (Second round)
Stefanie Vögele (First round)
Greet Minnen (Quarterfinals) Ysaline Bonaventure (First round)| Semifinals | Final | ||||||||||||
| 1 | Arantxa Rus | 6 | 6 | ||||||||||
| Q |  Tereza Mrdeža | 3 | 2 | ||||||||||
| 1 | Arantxa Rus | 4 | 6 | 68 | |||||||||
| PR | Irina Khromacheva | 6 | 1 | 710 | |||||||||
 Olga Danilović | 6 | 5 | 0 | ||||||||||
| PR | Irina Khromacheva | 3 | 7 | 6 | |||||||||
| First Round | Second Round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Rus | 6 | 6 | ||||||||||||||||||||||||
 Ç Büyükakçay | 2 | 2 | 1 | A Rus | 6 | 6 | |||||||||||||||||||||
| Q |  A Prisăcariu | 4 | 611 | N Kostić | 2 | 2 | |||||||||||||||||||||
| N Kostić | 6 | 713 | 1 | A Rus | 7 | 6 | |||||||||||||||||||||
| Q |  M Bassols Ribera | 6 | 6 | Q | M Bassols Ribera | 5 | 4 | ||||||||||||||||||||
| WC |  F Jones | 0 | 3 | Q | M Bassols Ribera | 6 | 6 | ||||||||||||||||||||
| WC | M Custic | 0 | 77 | 6 | WC | M Custic | 3 | 4 | |||||||||||||||||||
| 8 | Y Bonaventure | 6 | 64 | 2 | 1 | A Rus | 6 | 6 | |||||||||||||||||||
| 3 | V Kužmová | 6 | 7 | Q | T Mrdeža | 3 | 2 | ||||||||||||||||||||
| Q |  C Ferrando | 4 | 5 | 3 | V Kužmová | 2 | 2 | ||||||||||||||||||||
| Q | T Mrdeža | 6 | 7 | Q | T Mrdeža | 6 | 6 | ||||||||||||||||||||
 M Minella | 2 | 5 | Q | T Mrdeža | 6 | 6 | |||||||||||||||||||||
 E Gorgodze | 6 | 6 | E Gorgodze | 1 | 4 | ||||||||||||||||||||||
 X You | 3 | 2 | E Gorgodze | 79 | 7 | ||||||||||||||||||||||
| WC |  V Jiménez Kasintseva | 6 | 3 | 6 | WC | V Jiménez Kasintseva | 67 | 5 | |||||||||||||||||||
| 6 | S Vögele | 1 | 6 | 4 | |||||||||||||||||||||||
| First Round | Second Round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | A-L Friedsam | 1 | 6 | 4 | |||||||||||||||||||||||
| V Diatchenko | 6 | 2 | 0r | 5 | A-L Friedsam | 2 | 77 | 62 | |||||||||||||||||||
| Q | G Maristany | 3 | 2 | O Danilović | 6 | 62 | 77 | ||||||||||||||||||||
| O Danilović | 6 | 6 | O Danilović | 6 | 6 | ||||||||||||||||||||||
 K Kozlova | 6 | 7 | Q | J Pieri | 4 | 4 | |||||||||||||||||||||
 C Muramatsu | 4 | 5 | K Kozlova | 0 | 6 | 4 | |||||||||||||||||||||
| Q | J Pieri | 1 | 6 | 7 | Q | J Pieri | 6 | 3 | 6 | ||||||||||||||||||
| 4 | T Babos | 6 | 4 | 5 | O Danilović | 6 | 5 | 0 | |||||||||||||||||||
| 7 | G Minnen | 6 | 6 | PR | I Khromacheva | 3 | 7 | 6 | |||||||||||||||||||
| Q | O Sáez Larra | 1 | 2 | 7 | G Minnen | 6 | 4 | 6 | |||||||||||||||||||
| Q | S Waltert | 7 | 77 | Q | S Waltert | 3 | 6 | 4 | |||||||||||||||||||
| M Barthel | 5 | 62 | 7 | G Minnen | 3 | 3 | |||||||||||||||||||||
| WC | A Mintegi del Olmo | 3 | 1 | PR | I Khromacheva | 6 | 6 | ||||||||||||||||||||
| PR | I Khromacheva | 6 | 6 | PR | I Khromacheva | 1 | 6 | 6 | |||||||||||||||||||
| L Arruabarrena | 6 | 3 | 6 | L Arruabarrena | 6 | 3 | 3 | ||||||||||||||||||||
| 2 | K Juvan | 1 | 6 | 4 | |||||||||||||||||||||||
Ksenia Milevskaya and Urszula Radwańska were the defending champions, but did not compete in the juniors that year.
Arantxa Rus was the defending champion, but she did not participate that year.
Roberta Vinci was the defending champion, but lost in the second round to Simona Halep 6–1, 6–3. Sara Errani won the tournament, beating Dominika Cibulková 6–2, 6–2 in the final.
Caroline Wozniacki was the defending champion, but she chose not to participate.
Agnieszka Radwańska won the title, defeating Simona Halep 7–5, 6–0 in the final.
Lara Arruabarrena Vecino was the defending champion, but lost to Karin Knapp in the quarterfinals.
Jelena Janković won the title, defeating Paula Ormaechea in the final, 6–1, 6–2.
Arantxa Rus was the defending champion, but lost in the first round to Mariana Duque Mariño.
Irina-Camelia Begu was the defending champion, but lost in the second round to Jana Čepelová.
Simona Halep was the defending champion, but chose not to participate this year.
Laura Siegemund was the defending champion, but could not defend her title due to a right knee injury.
Lara Arruabarrena was the defending champion, but lost in the first round to Ekaterina Alexandrova.
Anett Kontaveit was the defending champion, however she chose not to participate.
Elina Svitolina was the defending champion, but chose to compete in Stuttgart instead.
Anastasia Pavlyuchenkova was the defending champion, but chose not to participate.
Carina Witthöft was the defending champion, but lost in the first round to Vera Lapko.
Belinda Bencic was the champion the last time the event was held in 2017, but chose to compete in St. Petersburg instead.
Kathinka von Deichmann was the defending champion, but lost to Arantxa Rus in the second round.
Tatjana Maria was the defending champion, but chose not to participate this year.
Rebecca Šramková was the defending champion but lost in the quarterfinals to Natalia Vikhlyantseva.
Simona Halep won her first Italian Open title, after the defending champion Karolína Plíšková retired from the final, with the scoreline at 6–0, 2–1.
Amanda Anisimova was the defending champion, having won the last edition of the tournament in 2019, but chose to participate in Charleston instead.