Kastamonu Eyalet

Kastamonu Eyalet (ایالت قسطمونی) was an eyalet of the Ottoman Empire.

Administrative divisions
Sanjaks of the Eyalet in the mid-19th century:
 * 1) Sanjak of Kocaeli (Bithynia)
 * 2) Sanjak of Bolu (Paphlagonia)
 * 3) Sanjak of Virantsehir (Honorias) (near Eskipazar?)
 * 4) Sanjak of Sinope (Helenopontus)