Even though Islam is the dominant religion in Algeria, people of other faiths are also respected and allowed to practice their respective religions. The role of Islam in the politics of Algeria is also undeniable, with the laws of Islam playing an important role in every aspect of people’s lives. In Algeria, Islam defines the ethics and behavior of its people, and heavily influences the cultural and social identity of the country as a whole.

Christians, Jews, and atheists form a very small minority of the populace of Morocco. Most are Sunni Muslims belonging to the Maliki school of jurisprudence, while a few are Ibadi, Shia, or Ahmadi Muslims. Islam, the official religion of Algeria, is also the religion practiced by the majority of the population of this country. Although Sudan is considered to be a country that is relatively tolerant of other religions, tension between Muslim-majority Sudan and Christian-dominated South Sudan have contributed to many conflicts, including the First and Second Sudanese Civil Wars, the War in Darfur, and the conflict that is currently ongoing in the country. The majority of believers in Sudan are Sunni Muslims. It is the largest religion practiced in Sudan, with over 95% of the population adhering to it. Sudan has the world's tenth-largest Muslim population. Here is a list of Muslim populations by country. While Muslims can be found in all corners of the world, some countries have larger Muslim populations than others. The Muslim population of the world is estimated at around 1.8 billion followers, making it the largest religion in the world after Christianity. Followers of Islam are referred to as Muslims.

Most populous religions