The 2003 CAM Open Comunidad Valenciana was a men's tennis tournament played on outdoor clay courts in Valencia, Spain and was part of the International Series of the 2003 ATP Tour.

It was the 9th edition of the tournament and was held from 28 April through 4 May 2003.

First-seeded Juan Carlos Ferrero won the singles title.

Juan Carlos Ferrero defeated Christophe Rochus 6–2, 6–4 Lucas Arnold / Mariano Hood defeated Brian MacPhie / Nenad Zimonjić 6–1, 6–7(7–9), 6–4