The Duke of Villaviciosa is a Spanish noble title created in 1708 by King Philip V for José de Silva y Álvarez de Toledo. The title is associated with the town of Villaviciosa in the province of Asturias. It has been held by various members of the House of Silva, a prominent noble family in Spain. The title is part of the Spanish nobility system, which includes various ranks such as counts and marquises. The Duke of Villaviciosa has historically been involved in political and social matters in Spain, contributing to the country's aristocratic heritage.