2017 Hua Hin Championships – Men's singles

Yūichi Sugita was the defending champion but chose not to defend his title.

John Millman won the title after defeating Andrew Whittington 6–2, 6–2 in the final.

Seeds
• # 🇦🇺 Matthew Ebden (quarterfinals)

• # 🇨🇦 Peter Polansky (first round)

• # 🇦🇺 Akira Santillan (second round, retired)

• # 🇯🇵 Tatsuma Ito (semifinals)

• # 🇷🇸 Nikola Milojević (second round, retired)

• # 🇯🇵 Go Soeda (semifinals)

• # 🇰🇷 Kwon Soon-woo (quarterfinals)

• # 🇦🇺 John Millman (champion)