2021 Antalya Open
The 2021 Antalya Open was a men's tennis tournament played on outdoor hard courts. It was the 4th edition of the event and part of the ATP Tour 250 series of the 2021 ATP Tour. The tournament took place in Antalya, Turkey, from January 7 to 13.
Points and prize money
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32 | Q2 | Q1 |
| Singles | €27,960 | €20,000 | €14,000 | €9,700 | €5,700 | €3,200 | €1,750 | €1,000 |
| Doubles* | €8,900 | €6,880 | €5,050 | €3,440 | €2,350 |
*per team
Singles main-draw entrants
Seeds
Other entrants
The following players received wildcards into the singles main draw:The following players received entry from the qualifying draw:
Withdrawals
;Before the tournament- Marco Cecchinato → replaced by Kacper Żuk
- Borna Ćorić → replaced by Tristan Lamasine
- Lloyd Harris → replaced by Nicola Kuhn
- Benoît Paire → replaced by Andrea Arnaboldi
- Jannik Sinner → replaced by Malek Jaziri
- João Sousa → replaced by Hugo Grenier
Doubles main-draw entrants
Seeds
Other entrants
The following pairs received wildcards into the doubles main draw:Withdrawals
;Before the tournament- Sander Arends / Matwé Middelkoop → replaced by Luca Margaroli / Florin Mergea
- Matteo Berrettini / Jannik Sinner → replaced by Denys Molchanov / Aleksandr Nedovyesov
- Tomislav Brkić / Aisam-ul-Haq Qureshi → replaced by Ivan Sabanov / Matej Sabanov
- Lloyd Harris / David Pel → replaced by Jiří Veselý / Tristan-Samuel Weissborn
- Benoît Paire / Stefano Travaglia → replaced by Harri Heliövaara / Emil Ruusuvuori