The Italo-Turkish or Turco-Italian War (, "Tripolitanian War"; also known in Italy as Guerra di Libia, "Libyan War") was fought between the Ottoman Empire and the Kingdom of Italy from September 29, 1911, to October 18, 1912. As a result of this conflict, Italy captured the Ottoman Tripolitania Vilayet (province), of which the most notable sub-provinces (sanjaks) were Fezzan, Cyrenaica, and Tripoli itself. These territories together formed what became known as Italian Libya.