Santiago Ruiz Diaz (born June 20, 2007) is an Argentine actor from Buenos Aires. He began acting in 2025 and has trained in film and theater in Argentina. His credits include the Government of the Province of Buenos Aires campaign “¿Estás? Estoy.” and the short films Cellophane Lizard (Lagarto de Celofán), Las Calles de Cromañón, and In SANO.