1) Islam 2) Islamism 3) Mohammedanism 4) Muhammadanism 5) Muslimism 6) Wahabism 1) Wahabism 
Wahabism noun a conservative and intolerant form of Islam that is practiced in Saudi Arabia; `Osama bin Laden and his followers practice Wahhabism`
Name used outside Saudi Arabia to designate official interpretation of Islam in Saudi Arabia. The faith is a puritanical concept of unitarianism (the call to the oneness or unity of God-- ad dawa lil tawhid ) that was preached by Muhammad ibn Abd al Wahhab, whence his Muslim opponents derived the name.