The data shows the percentage of Muslims by country for the year 2010. Also displayed are sub-religions of Islam: Shia, Sunni and other, as a percentage by country for the same year.

For display purposes the data shows the major religions, displayed as a percentage (over 1 percent) by country. Countries where data is less than 1 percent are shown in grey.

Data Definition:

Muslims - Followers of Islam, in two primary branches: (a) Sunni; and (b) Shia. Other, significantly smaller, branches include Kharijite, Sanusi, Mahdiya, Ahmadiya, Druzes, and Sabbateans. 

Muslims: Shia - Followers of one of Islam's 2 major traditions, consisting of Muslims who reject the sunna and hold that Mohammed's son-in-law Ali was the Prophet's successor. Shia Islam is separated into four sub-traditions: (1) Ithna-Ashari; (2) Ismaili; (3) Alawite; and (4) Zaydi.

Muslims: Sunni - Followers of one of Islam's two major traditions, consisting of Muslims who adhere to the tradition of the sunna, acknowledge the first four caliphs, and recognise four schools of jurisprudence: Hanafite, Hanbalite, Malikite, and Shafiite.

Muslims: Other - Followers of Islam outside of its 2 main branches of Sunni and Shia. Includes Kharijites; reform movements (Sanusi, Mahdiya); and sects considered heterodox by the two main branches (Ahmadiya, Druzes, Sabbateans).

Data Source: Todd M. Johnson and Brian J. Grim, eds. World Religion Database (Leiden/Boston: Brill, August 2014) /(Source: World Religion Database: Standard names and definitions for top-level religions and sub-religions, November 2014)

Data Methodology: Read more on the specific methodology and definitions for this data here at the World Religion Database.