2022 Nonthaburi Challenger III – Singles

Arthur Cazaux was the defending champion but retired from his match with Stuart Parker in the final; 6–4, 4–1.

Seeds
• # 🇯🇵 Yosuke Watanuki (quarterfinals)

• # Valentin Vacherot (first round)

• # Lý Hoàng Nam (quarterfinals)

• # 🇬🇧 Billy Harris (quarterfinals)

• # 🇩🇪 Nicola Kuhn (first round)

• # Alibek Kachmazov (first round)

• # 🇦🇺 Dane Sweeny (first round)

• # 🇮🇳 Prajnesh Gunneswaran (second round)