Islam is the predominant religion. According to the 2004 census, 77.5% of the population are Muslim, 8.5% are Christian and 14% are "Other". About 5% of the Muslims living in Qatar are Shi'a.
Qatar is the only other Wahhabi state in the Arabian Peninsula. The other one is Saudi Arabia.
The majority of non-citizens are from South and Southeast Asian and Arab countries working on temporary employment contracts, accompanied by family members in some cases. Non-citizens can be Sunni or Shi'a Muslims, Protestant or Catholic Christians, Hindus, Jains, Buddhists, Sikhs, or Bahá'ís.
Religion is not a criterion for citizenship, according to the Nationality Law.
The Christian population consists nearly completely of foreigners. Active churches are Mar Thoma Church from Southern India, Arab Evangelicals from Syria and Palestine, and Anglicans, about 50,000 Catholics and Copts from Egypt. No foreign missionary groups operate openly in the country, but the government allows churches to conduct Mass. Since 2008 Christians have been allowed to build churches on ground donated by the government