There are four types of muslims; Sunni, Shiite, Wahhabi, and Sufi.
Message Posted: Mar 5, 2012 8:20:38 PM
Sunni Islam is the largest of the four, comprising up to 90% of the total Muslim population in the world. In a way this can be referred to as Orthodox Islam. Sunni comes from the term Sunnah, which refers to the words and actions or example of the Islamic prophet Muhammad.
Shia Islam (also spelled Shi'a) is the second largest. The followers are called Shi'as but the terms Shiites or Shi'ites are often used. Shia Islam hold that Muhammad's family, the Ahl al-Bayt ("the People of the House"), and certain individuals among his descendants, who are known as Imams, have special spiritual and political authority over the community.
Wahhabism is a Sunni Islamic sect based on the teachings of Muhammad ibn Abd-al-Wahhab, an 18th century scholar from what is today known as Saudi Arabia, who advocated purging Islam of what he considered impurities. Wahhabism is the dominant form of Islam in Saudi Arabia. It is often referred to as a "sect" or "branch" of Islam, though its supporters and some opponents reject such appellations. It has developed considerable influence in the Muslim world in part by funding mosques, schools and social programs.
Sufism or ta?awwuf is, according to its adherents, the inner, mystical dimension of Islam. A practitioner of this tradition is generally known as a ?ufi. Another name for a Sufi is Dervish.
I hope this helps to answer your question.