Islam is the official state religion of all of the following nations except:

In Turkey, while Islam is widely practiced and has significant cultural influence, it is not designated as the official state religion in the same way it is in Somalia, Tunisia, and Kuwait. Turkey's secular constitution establishes a separation between state and religion, reflecting the principles set forth by Mustafa Kemal Atatürk in the early 20th century. Although the majority of the population identifies as Muslim, this secularism distinguishes Turkey from the other nations listed, where Islam plays a more central role in their governance and legal systems.

In contrast, Somalia, Tunisia, and Kuwait explicitly recognize Islam as the state religion, which means Islamic law influences their legal frameworks and government policies. This highlights how Turkey’s unique secular approach sets it apart from these countries, which do not have such a separation.