The 2023 Grand Prix Hassan II was a professional tennis tournament played in Marrakesh, Morocco on clay courts.

It was the 37th edition of the tournament and was classified as an ATP Tour 250 event on the 2023 ATP Tour.

It took place from 3 to 9 April 2023.

[1] *per team † Rankings are as of 20 March 2023 The following players received wildcard entry into the singles main draw: The following players received entry from qualifying draw: The following players received entry as lucky losers: The following pairs received wildcards into the doubles main draw: The following pair received entry as alternates: