1998 Grand Prix Hassan II – Singles

Hicham Arazi was the defending champion, but lost in the quarterfinals this year.

Andrea Gaudenzi won the title, defeating Álex Calatrava 6–4, 5–7, 6–4 in the final.

Seeds

 * 1) 🇪🇸 Albert Portas (quarterfinals)
 * 2) 🇲🇦 Hicham Arazi (quarterfinals)
 * 3) 🇲🇦 Karim Alami (semifinals)
 * 4) 🇮🇹 Andrea Gaudenzi (champion)
 * 5)  Sjeng Schalken (second round, withdrew)
 * 6)  Juan Antonio Marín (quarterfinals)
 * 7) 🇪🇸 Jordi Burillo (second round)
 * 8) 🇮🇹 Davide Sanguinetti (second round)