The 2003 Grand Prix SAR La Princesse Lalla Meryem was a women's tennis tournament played on outdoor clay courts in Casablanca, Morocco that was part of the Tier V category of the 2003 WTA Tour.

It was the third edition of the tournament and was held from 31 March until 6 April 2003.

Second-seeded Rita Grande won the singles title and earned $16,000 first-prize money.

Rita Grande defeated Antonella Serra Zanetti 6–2, 4–6, 6–1 Gisela Dulko / María Emilia Salerni defeated Henrieta Nagyová / Elena Tatarkova 6–3, 6–4