Wāli or vali (from Arabic والي Wāli) is an administrative title that was used during the Caliphate and Ottoman Empire to designate governors of administrative divisions. It is still in use in some countries influenced by Arab or Muslim culture. The division that a Wāli governs is called Wilayah, or, in the case of Ottoman Turkey, "Vilayet".
In Turkey (the main successor state to the Ottoman Empire), a wāli (spelled as "vali") is the "governor" and administrative head of each of the 81 provinces of the country, and is appointed by the government.