2023 Shenzhen Longhua Open – Men's singles

Zhang Zhizhen was the defending champion but chose not to defend his title.

Aleksandar Kovacevic won the title after defeating Nuno Borges 7–6(7–4), 7–6(7–5) in the final.

Seeds
• # 🇦🇺 Thanasi Kokkinakis (second round)

• # 🇦🇷 Pedro Cachin (semifinals)

• # Nuno Borges (final)

• # 🇮🇹 Fabio Fognini (first round)

• # 🇦🇺 James Duckworth (second round)

• # 🇺🇸 Aleksandar Kovacevic (champion)

• # 🇫🇷 Térence Atmane (second round)

• # Hsu Yu-hsiou (quarterfinals)