| Doubles | |
|---|---|
| 2021 Andalucía Open | |
| Champion |  Ariel Behar  Gonzalo Escobar |
| Runner-up |  Tomislav Brkić  Nikola Ćaćić |
| Final score | 6–2, 6–4 |
This was the first edition of the tournament, primarily organised due to the cancellation of some tournaments in 2021, due to the COVID-19 pandemic.
Ariel Behar and Gonzalo Escobar won the title, defeating Tomislav Brkić and Nikola Ćaćić in the final, 6–2, 6–4.
Sander Gillé / Joran Vliegen (first round)
Marcus Daniell / 
Philipp Oswald (quarterfinals)
Marcelo Arévalo / 
Matwé Middelkoop (semifinals)
Luke Saville / John-Patrick Smith (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | S Gillé J Vliegen | 6 | 65 | [8] | |||||||||||||||||||||||
| WC |  D Marrero A Menéndez Maceiras | 4 | 77 | [10] | WC | D Marrero A Menéndez Maceiras | 4 | 0 | |||||||||||||||||||
 H Nys  T Pütz | 4 | 6 | [10] | H Nys T Pütz | 6 | 6 | |||||||||||||||||||||
| R Carballés Baena A Ramos Viñolas | 6 | 3 | [7] | H Nys T Pütz | 4 | 61 | |||||||||||||||||||||
| 4 | L Saville J-P Smith | 1 | 7 | [10] | A Behar G Escobar | 6 | 77 | ||||||||||||||||||||
| A Behar G Escobar | 6 | 5 | [12] | A Behar G Escobar | 6 | 7 | |||||||||||||||||||||
 A Göransson  N Monroe | 6 | 1 | [12] | A Göransson N Monroe | 4 | 5 | |||||||||||||||||||||
 A Bublik  D Inglot | 3 | 6 | [10] | A Behar G Escobar | 6 | 6 | |||||||||||||||||||||
 R Berankis A Sitak | 6 | 4 | [11] | T Brkić N Ćaćić | 2 | 4 | |||||||||||||||||||||
 S González MÁ Reyes-Varela | 4 | 6 | [13] | S González MÁ Reyes-Varela | 3 | 2 | |||||||||||||||||||||
 J Erlich  A Vasilevski | 4 | 62 | 3 | M Arévalo M Middelkoop | 6 | 6 | |||||||||||||||||||||
| 3 | M Arévalo M Middelkoop | 6 | 77 | 3 | M Arévalo M Middelkoop | 4 | 4 | ||||||||||||||||||||
| T Brkić N Ćaćić | 1 | 6 | [10] | T Brkić N Ćaćić | 6 | 6 | |||||||||||||||||||||
| S Arends D Pel | 6 | 0 | [5] | T Brkić N Ćaćić | 4 | 77 | [11] | ||||||||||||||||||||
| WC | F López M López | 1 | 2 | 2 | M Daniell P Oswald | 6 | 65 | [9] | |||||||||||||||||||
| 2 | M Daniell P Oswald | 6 | 6 | ||||||||||||||||||||||||
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First seed Alexander Zverev won the tournament, defeating third seed Félix Auger-Aliassime 6–3, 6–3 in the final. This was the first edition of the tournament, primarily organised due to the cancellation of many tournaments in 2020, due to the COVID-19 pandemic.
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| Grand Slam events | |
|---|---|
| ATP Tour Masters 1000 | |
| ATP Tour 500 | |
| ATP Tour 250 |
|
| Team events | |
 – Tournaments are affected by the COVID-19 pandemic * – Tournaments are introduced due to the impact of the COVID-19 pandemic | |