The 2021 Mallorca Championships was a men's tennis tournament played on outdoor grass courts. It was the inaugural edition of the Mallorca Championships, and part of the ATP Tour 250 series of the 2021 ATP Tour. It was held at the Santa Ponsa Tennis Academy in Santa Ponsa, Spain, from 19 June until 26 June 2021.
See main article: 2021 Mallorca Championships – Singles.
Daniil Medvedev def. 
Sam Querrey, 6–4, 6–2.See main article: 2021 Mallorca Championships – Doubles.
Simone Bolelli / 
Máximo González def. 
Novak Djokovic / 
Carlos Gómez-Herrera, walkover| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q2 | width=85 | Q1 |
| Singles | 250 | 150 | 90 | 45 | 20 | 0 | 12 | 6 | 0 | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 0 |
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q2 | width=85 | Q1 |
| Singles | €70,620 | €50,630 | €36,040 | €24,030 | €15,450 | €9,295 | €4,540 | €2,360 | ||
| Doubles* | €26,370 | €18,880 | €12,440 | €8,080 | €4,740 |
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| Russian Federation | Daniil Medvedev | 2 | 1 |
| Dominic Thiem | 5 | 2 | |
| Spain | Roberto Bautista Agut | 10 | 3 |
| Pablo Carreño Busta | 12 | 4 | |
 Norway | Casper Ruud | 15 | 5 |
| Russian Federation | Karen Khachanov | 27 | 6 |
 France | Ugo Humbert | 31 | 7 |
| Serbia | Dušan Lajović | 40 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
Jérémy Chardy → replaced by Stefano Travaglia Federico Delbonis → replaced by Corentin Moutet
Nick Kyrgios → replaced by 
Jiří Veselý| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Spain | Marcel Granollers | Argentina | Horacio Zeballos | 18 | 1 | |
 New Zealand | Marcus Daniell |  Austria | Philipp Oswald | 82 | 2 | |
| Austria | Oliver Marach |  Pakistan | Aisam-ul-Haq Qureshi | 85 | 3 | |
| Italy | Simone Bolelli | Argentina | Máximo González | 91 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry as an alternate:
Jonathan Erlich / 
Andrei Vasilevski Michael Venus → replaced by Adrian Mannarino / 
Miguel Ángel Reyes Varela
Sander Gillé / Joran Vliegen → replaced by Roman Jebavý / Jiří Veselý Pablo Andújar / Pablo Carreño Busta → replaced by Guido Pella / João Sousa