| Date: | 9–15 October 2023 |
| Edition: | 19th |
| Draw: | 32S / 16D |
| Prize Money: | $259,303 (women) |
| Surface: | Hard, outdoor |
| Location: | Seoul, South Korea |
| Venue: | Seoul Olympic Park Tennis Center |
| Champs: |  Jessica Pegula |
| Champd: |  Marie Bouzková / Bethanie Mattek-Sands |
| Main Name: | Korea Open (tennis) |
| Before Name: | Korea Open (tennis) |
| After Name: | Korea Open (tennis) |
The 2023 Korea Open (also known for sponsorship purposes as the 2023 Hana Bank Korea Open) was a tennis tournament played on outdoor hard courts. It was the 19th edition of the tournament and a WTA 250 event on the 2023 WTA Tour. The tournament took place at the Olympic Park Tennis Center in Seoul, South Korea from 9 to 15 October 2023.[1] The men's event was discontinued this year following the return of the ATP Tour to China.
See main article: 2023 Korea Open – Singles.
Jessica Pegula def. 
Yuan Yue 6–2, 6–3See main article: 2023 Korea Open – Doubles.
Marie Bouzková / Bethanie Mattek-Sands def. 
Luksika Kumkhum / Peangtarn Plipuech 6–2, 6–1| Country | Player | Rank | Seeds | |
|---|---|---|---|---|
| United States | Jessica Pegula | 4 | 1 | |
| Jeļena Ostapenko | 17 | 2 | ||
| Ekaterina Alexandrova | 20 | 3 | ||
| Czech Republic | Marie Bouzková | 30 | 4 | |
| United States | Sofia Kenin | 31 | 5 | |
| United States | Alycia Parks | 43 | 6 | |
| Arantxa Rus | 51 | 7 | ||
 United Kingdom | Katie Boulter | 56 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Irina-Camelia Begu → replaced by Eva Lys Margarita Betova → replaced by Polina Kudermetova
Kimberly Birrell → replaced by Yuan Yue Anna Kalinskaya → replaced by Ashlyn Krueger Tereza Martincová → replaced by 
Jang Su-jeong 
Diane Parry → replaced by 
Laura Pigossi Bernarda Pera → replaced by Irina Khromacheva Wang Yafan → replaced by 
Viktória Hrunčáková| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
 Japan | Eri Hozumi | Japan | Makoto Ninomiya | 103 | 1 | |
| Czech Republic | Marie Bouzková | United States | Bethanie Mattek-Sands | 109 | 2 | |
| Irina Khromacheva | Wu Fang-hsien | 123 | 3 | |||
| United States | Sabrina Santamaria | Yana Sizikova | 133 | 4 |
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
Viktória Hrunčáková / Arantxa Rus → replaced by Liang En-shuo / Yuan Yue