Qutbism is the radical strain of Islamist ideology and activism, based on the thought and writings of Sayyid Qutb, a notorious Islamist and former leading member of the Muslim Brotherhood who was executed in 1966.

Al-Qaeda had urbanized during the Islamic revival and Islamist movement of the last three decades of the 20th century. Some argue that al-Qaeda wouldn’t exist without the writings of Sayyid Qutb, as he lectured; the Muslim world was no longer Muslim because of the lack of Islamic religious law.