2018 Kobe Challenger – Singles

Stéphane Robert was the defending champion but chose not to defend his title.

Tatsuma Ito won the title after defeating Yosuke Watanuki 3–6, 7–5, 6–3 in the final.

Seeds
• # 🇯🇵 Yoshihito Nishioka (semifinals)

• # 🇯🇵 Tatsuma Ito (champion)

• # 🇯🇵 Hiroki Moriya (quarterfinals)

• # 🇯🇵 Go Soeda (quarterfinals)

• # 🇰🇷 Lee Duck-hee (withdrew)

• # 🇯🇵 Yasutaka Uchiyama (semifinals)

• # 🇯🇵 Yosuke Watanuki (final)

• # 🇰🇷 Kwon Soon-woo (quarterfinals)