| Singles | |
|---|---|
| 2021 Budapest Grand Prix | |
| Champion |  Yulia Putintseva |
| Runner-up |  Anhelina Kalinina |
| Score | 6–4, 6–0 |
Simona Halep was the defending champion, having won the previous edition in 2013, but chose not to participate.
Yulia Putintseva won the title, defeating Anhelina Kalinina in the final, 6–4, 6–0.
Yulia Putintseva (champion)
Danielle Collins (semifinals, retired) Bernarda Pera (second round)
Irina-Camelia Begu (first round) Ana Bogdan (second round)
Aliaksandra Sasnovich (second round)
Viktoriya Tomova (first round)
Sara Errani (first round)| Semifinals | Final | ||||||||||||
| 1 | Yulia Putintseva | 6 | 3 | 6 | |||||||||
| WC |  Dalma Gálfi | 2 | 6 | 2 | |||||||||
| 1 | Yulia Putintseva | 6 | 6 | ||||||||||
| Anhelina Kalinina | 4 | 0 | |||||||||||
| Anhelina Kalinina | 77 | 4 | |||||||||||
| 2 | Danielle Collins | 65 | 1r | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | Y Putintseva | 6 | 6 | ||||||||||||||||||||||||
| Q |  E Gorgodze | 2 | 4 | 1 | Y Putintseva | 6 | 6 | ||||||||||||||||||||
 A Konjuh | 4 | 6 | 6 | A Konjuh | 4 | 3 | |||||||||||||||||||||
| Q | T Mrdeža | 6 | 3 | 2 | 1 | Y Putintseva | 64 | 6 | 7 | ||||||||||||||||||
| PR | K Kozlova | 711 | 6 | PR | K Kozlova | 77 | 0 | 5 | |||||||||||||||||||
 B Haas | 69 | 3 | PR | K Kozlova | 4 | 6 | 6 | ||||||||||||||||||||
| V Lepchenko | 4 | 5 | 5 | A Bogdan | 6 | 4 | 2 | ||||||||||||||||||||
| 5 | A Bogdan | 6 | 7 | 1 | Y Putintseva | 6 | 3 | 6 | |||||||||||||||||||
| 4 | I-C Begu | 3 | 4 | WC | D Gálfi | 2 | 6 | 2 | |||||||||||||||||||
| PR |  AK Schmiedlová | 6 | 6 | PR | AK Schmiedlová | 2 | 5 | ||||||||||||||||||||
 A Bolsova | 64 | 3 | WC | D Gálfi | 6 | 7 | |||||||||||||||||||||
| WC | D Gálfi | 77 | 6 | WC | D Gálfi | 6 | 6 | ||||||||||||||||||||
 T Korpatsch | 2 | 2 | Q |  O Danilović | 4 | 2 | |||||||||||||||||||||
| Q | O Danilović | 6 | 6 | Q | O Danilović | 6 | 6 | ||||||||||||||||||||
| I Bara | 4 | 7 | 6 | I Bara | 4 | 3 | |||||||||||||||||||||
| 8 | S Errani | 6 | 5 | 2 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | A Sasnovich | 6 | 2 | ||||||||||||||||||||||||
| T Babos | 0 | 0r | 6 | A Sasnovich | 64 | 2 | |||||||||||||||||||||
 M Sherif | 3 | 1 | WC | P Udvardy | 77 | 6 | |||||||||||||||||||||
| WC | P Udvardy | 6 | 6 | WC | P Udvardy | 4 | 4 | ||||||||||||||||||||
| A Kalinina | 6 | 77 | A Kalinina | 6 | 6 | ||||||||||||||||||||||
 A Kalinskaya | 4 | 65 | A Kalinina | 7 | 6 | ||||||||||||||||||||||
| Q | J Grabher | 7 | 1 | 2 | 3 | B Pera | 5 | 3 | |||||||||||||||||||
| 3 | B Pera | 5 | 6 | 6 | A Kalinina | 77 | 4 | ||||||||||||||||||||
| 7 | V Tomova | 2 | 3 | 2 | D Collins | 65 | 1r | ||||||||||||||||||||
| Q |  P Ormaechea | 6 | 6 | Q | P Ormaechea | 6 | 78 | ||||||||||||||||||||
| PR | I Jorović | 5 | 78 | 77 | PR | I Jorović | 1 | 66 | |||||||||||||||||||
| Q | J Cristian | 7 | 66 | 63 | Q | P Ormaechea | 1 | 4 | |||||||||||||||||||
| E Cocciaretto | 4 | 5 | 2 | D Collins | 6 | 6 | |||||||||||||||||||||
| WC | RL Jani | 6 | 7 | WC | RL Jani | 5 | 0 | ||||||||||||||||||||
| LL | M Di Giuseppe | 2 | 1 | 2 | D Collins | 7 | 6 | ||||||||||||||||||||
| 2 | D Collins | 6 | 6 | ||||||||||||||||||||||||
Jaqueline Cristian (qualified) Olga Danilović (qualified) Cristina Bucșa (qualifying competition) Lara Arruabarrena (first round) Katie Volynets (first round) Julia Grabher (qualified) Tereza Mrdeža (qualified) Martina Di Giuseppe (qualifying competition; lucky loser) Ekaterine Gorgodze (qualified) Jamie Loeb (qualifying competition) Katharina Gerlach (first round) Kateryna Bondarenko (first round)| First round | Qualifying competition | ||||||||||||
| 1 | Jaqueline Cristian | 1 | 6 | 6 | |||||||||
| WC | Fanny Stollár | 6 | 1 | 2 | |||||||||
| 1 | Jaqueline Cristian | 6 | 4 | 77 | |||||||||
| 8 | Martina Di Giuseppe | 1 | 6 | 63 | |||||||||
 Carolina Alves | 4 | 7 | 4 | ||||||||||
| 8 | Martina Di Giuseppe | 6 | 5 | 6 | |||||||||
| First round | Qualifying competition | ||||||||||||
| 2 | Olga Danilović | 6 | 6 | ||||||||||
| Irene Burillo Escorihuela | 4 | 3 | |||||||||||
| 2 | Olga Danilović | 6 | 3 | 6 | |||||||||
| Alt | Miriam Bulgaru | 3 | 6 | 3 | |||||||||
| Alt | Miriam Bulgaru | 6 | 4 | 6 | |||||||||
| 11 | Katharina Gerlach | 3 | 6 | 2 | |||||||||
| First round | Qualifying competition | ||||||||||||
| 3 | Cristina Bucșa | 6 | 5 | 6 | |||||||||
| WC | Dorka Drahota-Szabó | 3 | 7 | 0 | |||||||||
| 3 | Cristina Bucșa | 4 | 62 | ||||||||||
| 7 | Tereza Mrdeža | 6 | 77 | ||||||||||
| WC | Natália Szabanin | 4 | 2 | ||||||||||
| 7 | Tereza Mrdeža | 6 | 6 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 4 | Lara Arruabarrena | 2 | 2 | ||||||||||
| Victoria Duval | 6 | 6 | |||||||||||
| Victoria Duval | 63 | 2 | |||||||||||
| Paula Ormaechea | 77 | 6 | |||||||||||
| Paula Ormaechea | 6 | 6 | |||||||||||
| 12 | Kateryna Bondarenko | 2 | 3 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 5 | Katie Volynets | 65 | 6 | 3 | |||||||||
| Andrea Lázaro García | 77 | 1 | 6 | ||||||||||
| Andrea Lázaro García | 6 | 3 | 2 | ||||||||||
| 9 | Ekaterine Gorgodze | 3 | 6 | 6 | |||||||||
| Anna Bondár | 63 | 6 | 3 | ||||||||||
| 9 | Ekaterine Gorgodze | 77 | 4 | 6 | |||||||||
| First round | Qualifying competition | ||||||||||||
| 6 | Julia Grabher | 6 | 6 | ||||||||||
| WC | Amarissa Kiara Tóth | 3 | 4 | ||||||||||
| 6 | Julia Grabher | 6 | 6 | ||||||||||
| 10 | Jamie Loeb | 0 | 3 | ||||||||||
| Zuzana Zlochová | 5 | 3 | |||||||||||
| 10 | Jamie Loeb | 7 | 6 | ||||||||||
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