The 2003 Grand Prix Hassan II was a tennis tournament played on outdoor clay courts at the Complexe Al Amal in Casablanca in Morocco and was part of the International Series of the 2003 ATP Tour. It was the 19th edition of the tournament and was held from April 7 through April 13, 2003.
Julien Boutter defeated Younes El Aynaoui 6–2, 2–6, 6–1
- It was Boutter's only title of the year and the 5th of his career.
František Čermák / Leoš Friedl defeated Devin Bowen / Ashley Fisher 6–3, 7–5
- It was Čermák's only title of the year and the 3rd of his career. It was Friedl's only title of the year and the 3rd of his career.