2022 Nonthaburi Challenger II – Singles

Valentin Vacherot was the defending champion but lost in the quarterfinals to Beibit Zhukayev.

Arthur Cazaux won the title after defeating Omar Jasika 7–6(8–6), 6–4 in the final.

Seeds
• # 🇯🇵 Yosuke Watanuki (second round)

• # 🇬🇧 Alastair Gray (first round)

• # 🇯🇵 Yasutaka Uchiyama (withdrew)

• # 🇰🇿 Denis Yevseyev (first round)

• # 🇧🇷 Gabriel Décamps (semifinals, retired)

• # 🇬🇧 Billy Harris (second round)

• # 🇺🇦 Illya Marchenko (second round)

• # 🇩🇪 Nicola Kuhn (withdrew)