Baron István Jósika de Branyicska, also Ștefan Jósika or Ștefan Iojică (? – 11 September 1598) was a Hungarian noble in the Principality of Transylvania, who served as Chancellor of Transylvania from Autumn 1594 to August 1598. He was the ancestor and first prominent member of the Baron Jósika de Branyicska family.