2022 Yokkaichi Challenger – Singles

Yūichi Sugita was the defending champion but lost in the second round to Colin Sinclair.

Yosuke Watanuki won the title after defeating Frederico Ferreira Silva 6–2, 6–2 in the final.

Seeds
• # 🇯🇵 Kaichi Uchida (semifinals)

• # 🇦🇺 James Duckworth (semifinals)

• # 🇯🇵 Yosuke Watanuki (champion)

• # 🇯🇵 Rio Noguchi (first round)

• # Hsu Yu-hsiou (first round)

• # 🇷🇴 Nicholas David Ionel (quarterfinals)

• # Lý Hoàng Nam (second round)

• # 🇦🇺 Dane Sweeny (first round)