Princess Sophie of Hohenberg ("Sophie Marie Franziska Antonia Ignatia Alberta von Hohenberg"; – ) was the only daughter of Archduke Franz Ferdinand of Austria and his wife Sophie, Duchess of Hohenberg, both of whom were assassinated at Sarajevo on 28 June 1914. Their assassination triggered the First World War, thus Sophie and her two brothers are sometimes described as the first orphans of the First World War.