The 2021 Atlanta Open (also known as the Truist Atlanta Open for sponsorship reasons) is a professional tennis tournament to be played on hard courts.

It is the 33rd edition of the tournament, and part of the 2021 ATP Tour.

It take place at Atlantic Station in Atlanta, United States between July 24 and August 1, 2021.

The tournament is hosted in the same week as the 2020 Summer Olympics.

The following players received wildcards into the main draw: The following player received entry using a protected ranking: The following player received entry as special exempt: The following players received entry from the qualifying draw: The following pairs received wildcards into the doubles main draw: