Last name Vilaja (Vilaja 
) , in the world, is a rare cognomen. The surname Vilaja is characteristic of Latin America and the Caribbean, particularly Bolivia, where it is a rare surname, and Argentina. Much less frequently, Vilaja is the forename as well as the last name.
Cele, Sandra, Sandro, Silvia, Sergio, Alicia, Adolfo, Carlos, Carmen, Gladys, Julian, Noelia, Nestor, Victor, Isabel, Mariela, Antonia, Claudio, Roberto, Ricardo, Liliana, Eugenio, Santos, Zulma, Oscar, Felix, Rosa, Rene, Rita, Luis, Jose, Juan, Elsa, Elba, Hugo, Hugh, Horacio, Maria, Sonia, Ariel, Ramon, David, Diego, Lidia, Jaime, Norma, Ester, Fredi, Marta, and Viviana