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.

[1] *per team The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following pairs received wildcards into the doubles main draw: