Juliana, Countess of Stolberg-Wernigerode (15 February 1506 in Stolberg, Saxony-Anhalt – 18 June 1580) was the mother of William the Silent, the leader of the successful Dutch Revolt against the Spanish in the 16th century. Her entire life, she kept close to her children, especially William. When William began his rebellion against Philip II of Spain she supported her son morally and financially. Because of this financial support, William was able to campaign against Spain in the Netherlands.