2025 Kobe Challenger

Country	Player	Rank1	Seed
TPE	Tseng Chun-hsin	131	1
JPN	Yoshihito Nishioka	134	2
JPN	Sho Shimabukuro	157	3
JPN	Yosuke Watanuki	170	4
FRA	Hugo Grenier	179	5
JPN	Rei Sakamoto	180	6
SWE	Elias Ymer	189	7
GBR	Oliver Crawford	192	8

• ¹ Rankings are as of 3 November 2025.^[1]

The following players received wildcards into the singles main draw:

• Kokoro Isomura
• Ryuki Matsuda
• Ryotaro Taguchi

The following player received entry into the singles main draw using a protected ranking:

• Jason Jung

The following player received entry into the singles main draw through the Junior Accelerator programme:

• Kaylan Bigun

The following players received entry from the qualifying draw:

• Max Basing
• Mitsuki Wei Kang Leong
• Igor Marcondes
• Nam Ji-sung
• Yusuke Takahashi
• Maxim Zhukov

• Yosuke Watanuki def. Elias Ymer 3–6, 6–1, 6–4.

• Neil Oberleitner / Michael Vrbenský def. Pruchya Isaro / Niki Kaliyanda Poonacha 6–7^(1–7), 7–6^(10–8), [10–4].