Algeria
Islam is the predominant religion in Algeria, with its adherents, mostly Sunnis, accounting for 99% of the population according to a 2012 CIA World Factbook estimate, and 97.9% according to Pew Research in 2010. There are about 150,000 Ibadis in the M'zab Valley in the region of Ghardaia.
Apostasy in Islam
Freedom of religion in Algeria is regulated by the Algerian Constitution, which declares Sunni Islam to be the state religion (Article 2) but also declares that "freedom of creed and opinion is inviolable" (Article 36); it prohibits discrimination, Article 29 states "All citizens are equal before the law. No discrimination shall prevail because of birth, race, sex, opinion or any other personal or social condition or circumstance".