2021 Korea Open

The 2021 Korea Open (also known as the 2021 Hana Bank Korea Open for sponsorship purposes) was a professional women's tennis tournament played on indoor hard courts. After the cancellation of the 2020 edition, the 2021 edition was also delayed and later downgraded to WTA 125 level from WTA 250 level as a result of Covid-19 Pandemic. It was the 17th edition of the tournament, and part of the 2021 WTA 125K series. It took place in Seoul, South Korea between 20 and 26 December 2021.

Seeds

 * 1 Rankings are as of December 13, 2021

Other entrants
The following players received wildcards into the singles main draw:
 * 🇰🇷 Back Da-yeon
 * 🇨🇿 Brenda Fruhvirtová
 * 🇰🇷 Jeong Bo-young
 * 🇰🇷 Park Eun-yeong

The following player received entry as an alternate:
 * 🇰🇷 Moon Jeong

Withdrawals

 * Before the tournament
 * 🇬🇧 Jodie Burrage → replaced by 🇨🇦 Carol Zhao
 * 🇺🇸 Hanna Chang → replaced by 🇫🇮 Anastasia Kulikova
 * 🇮🇹 Federica Di Sarra → replaced by 🇹🇭 Peangtarn Plipuech
 * 🇯🇵 Nao Hibino → replaced by 🇰🇷 Moon Jeong
 * 🇯🇵 Mai Hontama → replaced by 🇮🇳 Riya Bhatia
 * 🇺🇸 Dasha Ivanova → replaced by 🇰🇷 Kim Da-bin
 * 🇨🇿 Anna Sisková → replaced by 🇨🇿 Linda Fruhvirtová
 * 🇨🇳 Zhang Shuai → replaced by 🇰🇷 Choi Ji-hee

Seeds

 * 1 Rankings are as of December 13, 2021

Other entrants
The following pair received wildcards into the doubles main draw:
 * 🇰🇷 Jeong Bo-young / 🇰🇷 Jeong Yeong-won

Singles

 * 🇨🇳 Zhu Lin def. 🇫🇷 Kristina Mladenovic 6–0, 6–4

Doubles

 * 🇰🇷 Choi Ji-hee / 🇰🇷 Han Na-lae def. Valentini Grammatikopoulou / 🇭🇺 Réka Luca Jani 6–4, 6–4