Miss Mundo Dominicana 2003 pageant was held at the Palacio de los Deporte in Santo Domingo, Dominican Republic, on September 19, 2002.
At the end of the event, María Eugenia Vargas of Sánchez Ramírez was crowned Miss Mundo Dominicana 2003. Vargas represented the Dominican Republic at Miss World 2003, held in Sanya, China, where she placed as a top twenty semifinalist.