The Salafi movement or Salafism is a revival movement within Sunni Islam, which was formed as a socio-religious movement during the late 19th century and has remained influential in the Islamic world for over a century. The name "Salafiyya" refers to advocacy of a return to the traditions of the "pious predecessors", the first three generations of Muslims, who are believed to exemplify the pure form of Islam. In practice, Salafis maintain that Muslims ought to rely on the Qur'an, the Sunnah and the Ijma (consensus) of the salaf, giving these writings precedence over later religious interpretations. The Salafi movement aimed to achieve a renewal of Muslim life and had a major influence on many Muslim thinkers and movements across the Islamic world.

Sunni Islam is the largest branch of Islam, followed by 85–90% of the world's Muslims, and simultaneously the largest religious denomination in the world. Its name comes from the word Sunnah, referring to the tradition of Muhammad. The differences between Sunni and Shia Muslims arose from a disagreement over the succession to Muhammad and subsequently acquired broader political significance, as well as theological and juridical dimensions. According to Sunni traditions, Muhammad left no successor and the participants of the Saqifah event appointed Abu Bakr as the next-in-line. This contrasts with the Shia view, which holds that Muhammad appointed his son-in-law and cousin Ali ibn Abi Talib as his successor.