2023 San Diego Open

The 2023 San Diego Open was a women's tennis tournament played on outdoor hard courts. It was the 2nd edition of the women's event, which is a WTA 500 event on the 2023 WTA Tour. It was held at the Barnes Tennis Center in San Diego, United States, from 11 to 16 September 2023. The men's event was discontinued this year following the return of the ATP Tour to China.

Champions

Singles

Barbora Krejčíková def. Sofia Kenin 6–4, 2–6, 6–4

Doubles

Barbora Krejčíková / Kateřina Siniaková def. Danielle Collins / CoCo Vandeweghe 6–1, 6–4

Singles main-draw entrants

Seeds

¹ Rankings are as of 28 August 2023.

Other entrants

The following players received wildcards into the main draw:

The following players received entry from the qualifying draw:

Withdrawals

Victoria Azarenka → replaced by Alycia Parks
Coco Gauff → replaced by Sloane Stephens
Madison Keys → replaced by Danielle Collins
Donna Vekić → replaced by Jasmine Paolini

Doubles main-draw entrants

Seeds

¹ Rankings are as of 28 August 2023.

Other entrants

The following pair received a wildcard into the doubles main draw:

Danielle Collins / CoCo Vandeweghe