Archduke Peter Ferdinand of Austria, Prince of Hungary and Bohemia, Prince of Tuscany) (Peter Ferdinand Salvator Karl Ludwig Maria Joseph Leopold Anton Rupert Pius Pancraz; 12 May 1874, Salzburg, Austria-Hungary – 8 November 1948, St.
Gilgen, Salzburg, Austria) was an Austro-Hungarian archduke and an army commander in the Austro-Hungarian Army during World War I.
He was also the titular Grand Duke of Tuscany from 2 May 1921 to 8 November 1948.