Arab League

The Arab League is a group of 22 Arab countries; about half of them sit in Western Asia, which is the Asian core of what many people call the Middle East, while the rest stretch across Northern Africa and East Africa. All of them list Arabic as an official language. The League’s headquarters is in Cairo, Egypt, and its main goal is to help the member countries cooperate and keep good relations with one another. Arabs are not exclusively Muslim; a small percentage of the native speakers of Arabic worldwide are Christians, Druzes, Jews, or animists.
Arab League is also known as: LAS, League of Arab States, al-Jāmiʿa ad-Duwal al-ʿArabīyah, al-Jāmiʿa al-ʿArabīyah

Not all Muslim countries are Arab, and not all Arabs are Muslim

About 50 countries in the world have a Muslim-majority population but are not Arab or part of the Arab League. In South and Southeast Asia, examples include Indonesia, Pakistan, Afghanistan, Bangladesh, Malaysia, Brunei, and the Maldives. Central Asia has Kazakhstan, Uzbekistan, Turkmenistan, Kyrgyzstan, Tajikistan, and Azerbaijan. In Europe, Albania, Bosnia and Herzegovina, and Kosovo have mostly Muslim populations, while in West Africa the same is true for Niger, Mali, Senegal, The Gambia, Guinea, and Burkina Faso. These nations share Islam as the main religion, yet Arabic is not their primary language.
source: Muslim-Majority Countries source

The 22 Arab Countries Constituting the Arab League