2025 Seoul Open Challenger

The 2025 Seoul Open Challenger was a professional tennis tournament played on outdoor hard courts. It was the ninth edition of the tournament. It was part of the 2025 ATP Challenger Tour. It took place in Seoul, South Korea, between 27 October and 2 November 2025.

2025 Seoul Open Challenger
Date	27 October – 2 November
Edition	9th
Surface	Hard
Location	Seoul, South Korea
Champions
Singles
Sho Shimabukuro
Doubles
Nathaniel Lammons / Jean-Julien Rojer

Singles main draw entrants

Seeds

Country	Player	Rank1	Seed
AUS	James Duckworth	108	1
CHN	Bu Yunchaokete	115	2
JPN	Yoshihito Nishioka	152	3
AUT	Jurij Rodionov	154	4
HKG	Coleman Wong	156	5
POR	Henrique Rocha	161	6
JPN	Yosuke Watanuki	167	7
JPN	Taro Daniel	179	8

• ¹ Rankings as of 20 October 2025.^[1]

Other entrants

The following players received wildcards into the singles main draw:

• Chung Hyeon
• Shin San-hui
• Shin Woo-bin

The following players received entry from the qualifying draw:

• Masamichi Imamura
• Kokoro Isomura
• Yuki Mochizuki
• Park Ui-sung
• Kasidit Samrej
• Philip Sekulic

Champions

Singles

Main article: 2025 Seoul Open Challenger – Singles

• Sho Shimabukuro def Coleman Wong 6-4 , 6-3

Doubles

Main article: 2025 Seoul Open Challenger – Doubles

• Nathaniel Lammons / Jean-Julien Rojer def. George Goldhoff / Theodore Winegar 6–3, 6–4