2018 Grand Prix Hassan II – Singles

Borna Ćorić was the defending champion, but withdrew before the tournament began.

Pablo Andújar won the title, defeating Kyle Edmund in the final, 6–2, 6–2. Ranked number 355, Andújar became the lowest ranked player to win the ATP title since Lleyton Hewitt at the 1998 Adelaide International.

Seeds
• #🇪🇸 Albert Ramos Viñolas (second round)

• #🇬🇧 Kyle Edmund (final)

• #🇩🇪 Philipp Kohlschreiber (first round)

• #🇫🇷 Richard Gasquet (semifinals)

• # Robin Haase (first round)

• #🇫🇷 Benoît Paire (first round)

• #🇺🇦 Alexandr Dolgopolov (first round)

• #🇩🇪 Mischa Zverev (second round)

Seeds
• # 🇧🇾 Ilya Ivashka (qualifying competition, lucky loser)

• # 🇦🇺 Alex de Minaur (qualifying competition)

• # 🇫🇷 Calvin Hemery (qualified)

• # 🇫🇷 Corentin Moutet (first round)

• # 🇷🇺 Alexey Vatutin (qualified)

• # 🇪🇸 Tommy Robredo (qualifying competition)

• # 🇮🇹 Salvatore Caruso (first round)

• # Ernests Gulbis (first round)

Qualifiers
• # 🇪🇸 Pedro Martínez

• # 🇷🇺 Alexey Vatutin

• # 🇫🇷 Calvin Hemery

• # 🇮🇹 Andrea Arnaboldi

Lucky loser
• # 🇧🇾 Ilya Ivashka