Islam was the official religion of Saudi Arabia ever since its constitution in the 1920s (as a result of the unification war between Nejd and Hejaz). Prior to this it was the official religion of the Kingdom of Nejd from as early as records exist on the existence of an independent Nejd.
The main religion of Saudi Arabia is Islam
The official (and only accepted) religion in Saudi Arabia is Islam. Therefore, the Qur'an is its holy book.
Islam spread from Arabia.
Saudi Arabia's primary religion (along with most of the Middle East) is Islam.
Islam is the main religion of Saudi Arabia.
Islam is not A religion but it is THE religion. Mean to say that its the only religion. Its the religion of GOD for whole of humanity...
The religion revealed by Muhammad - Islam.
Islam, since being a citizen of Saudi Arabia legally requires you to be a Muslim.
islam
Islam
Islam is the official religion in Afghanistan.
Islam is the official religion of Muslims. Refer to questions below for more information.