2021 Korea Open – Doubles
2021 tennis event results
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Lara Arruabarrena and Tatjana Maria were the reigning champions, but chose not to participate.
Champions
Choi Ji-hee
Han Na-lae
Choi Ji-hee Han Na-laeRunners-up
Valentini Grammatikopoulou
Réka Luca Jani
Valentini Grammatikopoulou 
Réka Luca JaniScore6–4, 6–4
Draw8
| Doubles | |
|---|---|
| 2021 Korea Open | |
| Champions | Choi Ji-hee Han Na-lae |
| Runners-up | Valentini Grammatikopoulou Réka Luca Jani |
| Score | 6–4, 6–4 |
| Draw | 8 |
| Seeds | 2 |
Choi Ji-hee and Han Na-lae won the title, defeating Valentini Grammatikopoulou and Réka Luca Jani in the final, 6–4, 6–4.[1]
Seeds
Arianne Hartono / 
Olivia Tjandramulia (quarterfinals)- Valentini Grammatikopoulou / Réka Luca Jani (final)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- ITF = ITF entry
- PR = Protected ranking
- SR = Special ranking
- SE = Special exempt
- JE = Junior exempt
- JR = Junior Accelerator Programme entrant
- CO = College Accelerator Programme entrant
- NG = Next Gen Accelerator Program entrant
- w/o = Walkover
- r = Retired
- d = Defaulted
Draw
| Quarterfinals | Semifinals | Final | ||||||||||||||||||
| 1 |  A Hartono O Tjandramulia
| 2 | 4 | |||||||||||||||||
| J-h Choi N-l Han
| 6 | 6 | ||||||||||||||||||
| J-h Choi N-l Han
| 6 | 6 | ||||||||||||||||||
S-j Jang I Shinikova
| 0 | 2 | ||||||||||||||||||
| S-j Jang I Shinikova
| 7 | 6 | ||||||||||||||||||
 R Bhatia A Kulikova
| 5 | 0 | ||||||||||||||||||
| J-h Choi N-l Han
| 6 | 6 | ||||||||||||||||||
| 2 | V Grammatikopoulou RL Jani
| 4 | 4 | |||||||||||||||||
 F Contreras Y Naito
| 7 | 4 | [10] | |||||||||||||||||
| WC | B-y Jeong Y-w Jeong
| 5 | 6 | [6] | ||||||||||||||||
| F Contreras Y Naito
| 2 | 6 | [4] | |||||||||||||||||
| 2 | V Grammatikopoulou RL Jani
| 6 | 1 | [10] | ||||||||||||||||
 P Plipuech L Zhu
| 1 | 4 | ||||||||||||||||||
| 2 | V Grammatikopoulou RL Jani
| 6 | 6 | |||||||||||||||||