A beylerbeylik was a large administrative entity within the Ottoman Empire and Safavid Empire during the 15th-18th centuries.[citation needed] They were governed by beylerbeys ("bey of beys" i.e., commanders-in-chief).
- For Ottoman Beyerbeyliks, see Eyalet[1]
- For Safavid Beylerbeyliks, see Beylerbeylik (Safavid Persia)