| {{sort|a|23,000 - 24,200000 miliar}}<ref>[http://worldchristiandatabase.org/wcd/ World Christian Database] [[Gordon–Conwell Theological Seminary]] Centre for the Study of Global Christianity</ref>
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| [[Islam]]
| {{sort|b|1,570 - 12,650000 miliar}}<ref>http://www.religionfacts.com/big_religion_chart.htm</ref><ref>[http://www.pupr.edu/hkettani/papers/HICAH2010.pdf 2010 World Muslim Population pdf] Dr. Houssain Kettani January 2010</ref><ref>{{cite web|url=http://pewforum.org/docs/?DocID=450 |title=Mapping the Global Muslim Population |accessdate=2009-10-08 |work= }}</ref>
