2017 Aegon Surbiton Trophy – Men's singles

Lu Yen-hsun was the defending champion but chose not to defend his title.

Yūichi Sugita won the title after defeating Jordan Thompson 7–6(9–7), 7–6(10–8) in the final.

Seeds
• # 🇬🇧 Dan Evans (quarterfinals, retired)

• # 🇨🇾 Marcos Baghdatis (first round)

• # 🇷🇺 Daniil Medvedev (withdrew)

• # 🇹🇳 Malek Jaziri (first round)

• # 🇩🇪 Dustin Brown (semifinals)

• # 🇯🇵 Yūichi Sugita (champion)

• # 🇦🇺 Jordan Thompson (final)

• # 🇷🇴 Marius Copil (semifinals)