The 2023 Washington Open (called the Mubadala Citi DC Open for sponsorship reasons) was a tennis tournament played on outdoor hard courts.

FitzGerald Tennis Center in Washington, D.C., United States, from 31 July to 6 August 2023.

[4] The following players received wildcard entry into the singles main draw : The following player received entry using a protected ranking: The following players received entry from the qualifying draw: The following player received entry as a lucky loser: † Rankings are as of 24 July 2023.

The following pairs received wildcard entry into the doubles main draw : The following pair received entry from the qualifying draw: † Rankings are as of 24 July 2023.

The following pairs received wildcard entry into the doubles main draw :