Islam is a religion.
Islam . Sizable Muslim communities are also found in the Americas , Caucasus , China , Europe , Mainland Southeast Asia , Philippines and Russia . A Muslim is someone who follows or practices Islam , a monotheistic Abrahamic religion . The Quran ( [ kɔrˈɑːn ] ; القرآن , literally meaning `` the recitation '' ; also romanized Qur ` an or Koran ) is the central religious text of Islam , which Muslims believe to be a revelation from God ( Allah ) .