2023 Moselle Open – Singles

Ugo Humbert defeated Alexander Shevchenko in the final, 6–3, 6–3 to win the singles tennis title at the 2023 Moselle Open. It was his fourth career ATP Tour singles title.

Lorenzo Sonego was the defending champion, but lost in the quarterfinals to Fabio Fognini.

Seeds
The top four seeds received a bye into the second round. • # Holger Rune (withdrew)

• #🇦🇺 Alex de Minaur (withdrew)

• # Karen Khachanov (quarterfinals)

• #🇫🇷 Ugo Humbert (champion)

• #🇰🇿 Alexander Bublik (second round)

• #🇮🇹 Lorenzo Sonego (quarterfinals)

• #🇩🇪 Yannick Hanfmann (first round)

• # Stan Wawrinka (second round, retired)

• #🇩🇪 Daniel Altmaier (first round)

Seeds
• # 🇬🇧 Jan Choinski (first round)

• # Gijs Brouwer (qualifying competition, lucky loser)

• # 🇫🇷 Harold Mayot (qualified)

• # 🇫🇷 Hugo Grenier (first round)

• # 🇫🇷 Ugo Blanchet (first round)

• # 🇫🇷 Calvin Hemery (qualified)

• # 🇫🇷 Giovanni Mpetshi Perricard (withdrew)

• # 🇯🇴 Abdullah Shelbayh (qualified)

Qualifiers
• # 🇫🇷 Mathias Bourgue

• # 🇯🇴 Abdullah Shelbayh

• # 🇫🇷 Harold Mayot

• # 🇫🇷 Calvin Hemery

Lucky losers
• # 🇫🇷 Matteo Martineau

• # 🇭🇺 Máté Valkusz

• # Gijs Brouwer