Who are Muslims?

 One billion people form a vast range of races, nationalities and cultures across the globe, from the southern Philippines to Nigeria, are united by their common Islamic faith. About 18% live in the Arab world; the world's largest Muslim community is in Indonesia; substantial parts of Asia and most of Africa are Muslim, while significant minorities are also to be found in the Soviet Union, China, North and South America, and Europe.
Source: www.alim.org