The Vilayet of Salonica[3] (Ottoman Turkish: ولايت سلانيك, romanized: Vilâyet-i Selânik) was a first-level administrative division (vilayet) of the Ottoman Empire from 1867[4] to 1913.

In the late 19th century it reportedly had an area of 12,950 square miles (33,500 km2).

Present Pirin Macedonia part of it was administered as kazas of Cuma-yı Bala, Petriç, Nevrekop, Menlik, Ropçoz and Razlık.

According to the 1905/06 Ottoman Census, the vilayet had a total population of 921,359 people, ethnically consisting as:[8]

According to an estimate by Aram Andonian in 1908 there was the following ethnic distribution in the vilayet:[11]