The 2023 San Diego Open (also known as the Cymbiotika San Diego Open presented by ResMed for sponsorship reasons) 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.[1] [2] The men's event was discontinued this year following the return of the ATP Tour to China.
See main article: 2023 San Diego Open – Singles.
Barbora Krejčíková def. 
Sofia Kenin 6–4, 2–6, 6–4See main article: 2023 San Diego Open – Doubles.
Barbora Krejčíková / Kateřina Siniaková def. Danielle Collins / CoCo Vandeweghe 6–1, 6–4| Country | Player | Rank1 | Seed |
|---|---|---|---|
 Tunisia | Ons Jabeur | 5 | 1 |
 France | Caroline Garcia | 7 | 2 |
| Maria Sakkari | 8 | 3 | |
| Czech Republic | Barbora Krejčíková | 12 | 4 |
| Belinda Bencic | 13 | 5 | |
| Veronika Kudermetova | 16 | 6 | |
 Brazil | Beatriz Haddad Maia | 19 | 7 |
| Ekaterina Alexandrova | 20 | 8 | |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
Alycia Parks Coco Gauff → replaced by Sloane Stephens Madison Keys → replaced by Danielle Collins
Jasmine Paolini| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Czech Republic | Barbora Krejčíková | Czech Republic | Kateřina Siniaková | 3 | 1 | |
 Japan | Shuko Aoyama |  China | Yang Zhaoxuan | 34 | 2 | |
| Chan Hao-ching |  Mexico | Giuliana Olmos | 39 | 3 | ||
 Ukraine | Lyudmyla Kichenok | Jeļena Ostapenko | 50 | 4 |
The following pair received a wildcard into the doubles main draw:
