2023 Halle Open – Singles

Alexander Bublik defeated Andrey Rublev in the final, 6–3, 3–6, 6–3 to win the singles tennis title at the 2023 Halle Open.

Hubert Hurkacz was the defending champion, but lost in the second round to Tallon Griekspoor.

Seeds
• # Daniil Medvedev (quarterfinals)

• # Stefanos Tsitsipas (second round)

• # Andrey Rublev (final)

• #🇮🇹 Jannik Sinner (quarterfinals, retired)

• #🇨🇦 Félix Auger-Aliassime (withdrew)

• #🇵🇱 Hubert Hurkacz (second round)

• # Borna Ćorić (first round)

• #🇪🇸 Roberto Bautista Agut (semifinals)

• #🇩🇪 Alexander Zverev (semifinals)

Seeds
• # Aslan Karatsev (qualifying competition, lucky loser)

• # 🇨🇳 Zhang Zhizhen (first round)

• # 🇺🇸 Marcos Giron (qualified)

• # 🇩🇪 Daniel Altmaier (qualifying competition, retired)

• # 🇦🇺 Max Purcell (withdrew)

• # 🇫🇷 Luca Van Assche (first round)

• # 🇺🇸 Christopher Eubanks (qualified)

• # 🇫🇷 Benjamin Bonzi (first round)

Qualifiers
• # Roman Safiullin

• # 🇩🇪 Louis Wessels

• # 🇺🇸 Marcos Giron

• # 🇺🇸 Christopher Eubanks

Lucky losers
• # 🇮🇹 Andrea Vavassori

• # Aslan Karatsev