Vidal Santiago Díaz (January 1, 1910 – March 1982) was a member of the Puerto Rican Nationalist Party and served as president of the Santurce Municipal Board of officers of the party. He was also the personal barber of Nationalist leader Pedro Albizu Campos. Though not involved in the Puerto Rican Nationalist Party Revolts of the 1950s, Santiago Díaz's barbershop was attacked by forty armed police officers and U.S. National Guardsmen. The attack was historic in Puerto Rico—the first time an event of that magnitude had ever been transmitted live via radio and heard all over the island.