Qutbism (al-Quṭbīyah) is an Islamist ideology which was developed by Sayyid Qutb, a leading member of the Muslim Brotherhood who was executed by the Egyptian government in 1966. It has been described as advancing the extremist, jihadist ideology of propagating "offensive jihad" – waging jihad in conquest – "armed jihad in the advance of Islam", and simply "Islamic-based terrorism".
Sayyid Qutb could be said to have founded the actual movement of radical Islam. Qutbism has gained widespread attention due to its influence on militant Islamic extremists and terrorists, most notably Osama bin Laden and Ayman al-Zawahiri of al-Qaeda, as well as the Salafi-jihadi terrorist group ISIL/ISIS/IS/Daesh. Muslim extremists "cite Sayyid Qutb repeatedly and consider themselves his intellectual descendants". Qutbist literature has become a primary source of influence for numerous Jihadist organisations that have emerged since the 1970s, such as the Egyptian Islamic Jihad, Jama'ah al-Islamiyya, al-Takfir wal Hijra, Armed Islamic Group of Algeria (GIA), LIFG, Al-Qaeda, Al-Nusra Front, Islamic State, etc. that seek to implement their vision of armed Jihad.
While adherents of Qutbism are referred to as Qutbists or Qutbiyyun (singular: Qutbi), they rarely refer to themselves with these names (i.e. the word is not an endonym); the name was first and still is used by the sect's opponents (i.e. it is an exonym).
The main tenet of the Qutbist ideology is that the Muslim community doesn't follow the "true Islam", which "has been extinct for a few centuries". Contemporary Muslims having reverted to Godless ignorance (jahiliyya) Islam must be re-established by Qutb's followers.
Qutb outlined his religious and political ideas in his book Ma'alim fi-l-Tariq (aka Milestones). Important principles of Qutbism include:
Adherence to Sharia as sacred law accessible to humans, without which Islam cannot exist
Adherence to Sharia as a complete way of life that will bring not only justice, but peace, personal serenity, scientific discovery, complete freedom from servitude, and other benefits;
Avoidance of Western and non-Islamic "evil and corruption," including socialism, nationalism and consumerist capitalism.