| Singles | |
|---|---|
| 2021 Antalya Challenger | |
| Champion |  Jaume Munar |
| Runner-up |  Lorenzo Musetti |
| Final score | 6–7(7–9), 6–2, 6–2 |
This was the first edition of the tournament and first of two editions of the tournament to start the 2021 ATP Challenger Tour year. [1]
Jaume Munar won the title after defeating Lorenzo Musetti 6–7(7–9), 6–2, 6–2 in the final.
Jaume Munar (champion)
Daniel Elahi Galán (first round)
Thiago Seyboth Wild (first round)
Facundo Bagnis (first round) Lorenzo Musetti (final)
Daniel Altmaier (first round)
Jozef Kovalík (first round) Leonardo Mayer (second round)| Semifinals | Final | ||||||||||||
| 1 | Jaume Munar | 6 | 6 | ||||||||||
| Tommy Robredo | 0 | 1 | |||||||||||
| 1 | Jaume Munar | 67 | 6 | 6 | |||||||||
| 5 | Lorenzo Musetti | 79 | 2 | 2 | |||||||||
| WC |  Cem İlkel | 78 | 1 | 1 | |||||||||
| 5 | Lorenzo Musetti | 66 | 6 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | J Munar | 6 | 6 | ||||||||||||||||||||||||
| C Taberner | 3 | 4 | 1 | J Munar | 6 | 6 | |||||||||||||||||||||
 Z Kolář | 6 | 3 | 7 | Z Kolář | 2 | 4 | |||||||||||||||||||||
| L Giustino | 3 | 6 | 5 | 1 | J Munar | 3 | 6 | 6 | |||||||||||||||||||
 JP Varillas | 4 | 3 | A Giannessi | 6 | 2 | 0 | |||||||||||||||||||||
| Q |  R Cid Subervi | 6 | 6 | Q | R Cid Subervi | 3 | 2 | ||||||||||||||||||||
| A Giannessi | 6 | 7 | A Giannessi | 6 | 6 | ||||||||||||||||||||||
| 7 | J Kovalík | 4 | 5 | 1 | J Munar | 6 | 6 | ||||||||||||||||||||
| 4 | F Bagnis | 3 | 64 | T Robredo | 0 | 1 | |||||||||||||||||||||
| Q |  B Kavčič | 6 | 77 | Q | B Kavčič | 6 | 3 | 1 | |||||||||||||||||||
| R Molleker | 3 | 4 | T Robredo | 4 | 6 | 6 | |||||||||||||||||||||
| T Robredo | 6 | 6 | T Robredo | 6 | 6 | ||||||||||||||||||||||
| Q |  D Ajduković | 6 | 6 | Q | D Ajduković | 1 | 4 | ||||||||||||||||||||
| WC | M İlhan | 3 | 3 | Q | D Ajduković | 3 | 6 | 79 | |||||||||||||||||||
| P Lorenzi | 6 | 6 | P Lorenzi | 6 | 4 | 67 | |||||||||||||||||||||
| 6 | D Altmaier | 4 | 2 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | L Mayer | 6 | 6 | ||||||||||||||||||||||||
 T Griekspoor | 2 | 2 | 8 | L Mayer | 5 | 1 | |||||||||||||||||||||
| J Menezes | 3 | 4 | WC | C İlkel | 7 | 6 | |||||||||||||||||||||
| WC | C İlkel | 6 | 6 | WC | C İlkel | 65 | 6 | 77 | |||||||||||||||||||
 M Safwat | 6 | 5 | 67 | LL | TM Etcheverry | 77 | 4 | 64 | |||||||||||||||||||
 J Domingues | 4 | 7 | 79 | J Domingues | 1 | 2 | |||||||||||||||||||||
| LL | TM Etcheverry | 77 | 6 | LL | TM Etcheverry | 6 | 6 | ||||||||||||||||||||
| 3 | T Seyboth Wild | 65 | 4 | WC | C İlkel | 78 | 1 | 1 | |||||||||||||||||||
| 5 | L Musetti | 6 | 6 | 5 | L Musetti | 66 | 6 | 6 | |||||||||||||||||||
 A Tabilo | 2 | 0 | 5 | L Musetti | 6 | 6 | |||||||||||||||||||||
 E Escobedo | 66 | 3 |  R Ramanathan | 0 | 4 | ||||||||||||||||||||||
| R Ramanathan | 78 | 6 | 5 | L Musetti | 5 | 6 | 6 | ||||||||||||||||||||
 E Gómez | 6 | 6 | Q |  A Santillan | 7 | 3 | 4 | ||||||||||||||||||||
| WC | E Kırkın | 4 | 1 | E Gómez | 0 | 1 | |||||||||||||||||||||
| Q | A Santillan | 6 | 2 | 7 | Q | A Santillan | 6 | 6 | |||||||||||||||||||
| 2 | DE Galán | 2 | 6 | 5 | |||||||||||||||||||||||
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