2023 Grand Prix Hassan II – Singles

Roberto Carballés Baena defeated Alexandre Müller in the final, 4–6, 7–6(7–3), 6–2 to win the men's singles tennis title at the 2023 Grand Prix Hassan II. It was his second ATP Tour singles title.

David Goffin was the reigning champion, but withdrew due to injury before the tournament.

Seeds
The top four seeds received a bye into the second round. • #🇮🇹 Lorenzo Musetti (quarterfinals)

• #🇬🇧 Dan Evans (semifinals)

• # Botic van de Zandschulp (second round)

• # Tallon Griekspoor (quarterfinals)

• #🇺🇸 Maxime Cressy (first round)

• #🇫🇷 Richard Gasquet (first round)

• #🇫🇷 Benjamin Bonzi (second round)

• # Nicolás Jarry (first round)

Seeds
• # 🇫🇷 Hugo Grenier (qualifying competition, lucky loser)

• # 🇸🇪 Elias Ymer (qualified)

• # 🇨🇿 Vít Kopřiva (first round)

• # 🇮🇹 Riccardo Bonadio (qualified)

• # 🇺🇸 Nicolas Moreno de Alboran (qualifying competition)

• # 🇧🇬 Dimitar Kuzmanov (qualified)

• # 🇮🇹 Andrea Vavassori (qualified)

• # 🇫🇷 Arthur Cazaux (qualifying competition)

Qualifiers
• # 🇧🇬 Dimitar Kuzmanov

• # 🇸🇪 Elias Ymer

• # 🇮🇹 Andrea Vavassori

• # 🇮🇹 Riccardo Bonadio

Lucky losers
• # 🇫🇷 Hugo Grenier

• # Alexey Vatutin